Section A: Computers

Table of Contents

  1. How do I access the password file under Unix?
  2. How do I crack Unix passwords?
  3. What is password shadowing?
  4. Where can I find the password file if it's shadowed?
  5. What is NIS/yp?
  6. What are those weird characters after the comma in my passwd file?
  7. How do I access the password file under VMS?
  8. How do I crack VMS passwords?
  9. How do I break out of a restricted shell?
  10. How do I gain root from a suid script or program?
  11. How do I erase my presence from the system logs?
  12. How do I send fakemail?
  13. How do I fake posts to UseNet?
  14. How do I hack ChanOp on IRC?
  15. How do I modify the IRC client to hide my real username?
  16. How to I change to directories with strange characters in them?
  17. What is ethernet sniffing?
  18. What is an Internet Outdial?
  19. What are some Internet Outdials?
  20. What is this system?
  21. What are the default accounts for XXX?
  22. What port is XXX on?
  23. What is a trojan/worm/virus/logic bomb?
  24. How can I protect myself from virii and such?
  25. What is Cryptoxxxxxxx?
  26. What is PGP?
  27. What is Tempest?
  28. What is an anonymous remailer?
  29. What are the addresses of some anonymous remailers?
  30. How do I defeat copy protection?
  31. What is 127.0.0.1?

(Italic indicates updated questions, while bold indicates new questions.)

(To obtain the source and patches in this document, select load to local disk first.)


01. How do I access the password file under Unix?

In standard Unix the password file is /etc/passwd. On a Unix system with either NIS/yp or password shadowing, much of the password data may be elsewhere.


02. How do I crack Unix passwords?

Contrary to popular belief, Unix passwords cannot be decrypted. Unix passwords are encrypted with a one way function. The login program encrypts the text you enter at the "password:" prompt and compares that encrypted string against the encrypted form of your password.

Password cracking software uses wordlists. Each word in the wordlist is encrypted and the results are compared to the encrypted form of the target password.

The best cracking program for Unix passwords is currently Crack by Alec Muffett. For PC-DOS, the best package to use is currently CrackerJack.


03. What is password shadowing?

Password shadowing is a security system where the encrypted password field of /etc/passwd is replaced with a special token and the encrypted password is stored in a separate file which is not readable by normal system users.

To defeat password shadowing on many (but not all) systems, write a program that uses successive calls to getpwent() to obtain the password file.

Example: unshadow.c


04. Where can I find the password file if it's shadowed?

Unix                  Path                            Token
-----------------------------------------------------------------
AIX 3                 /etc/security/passwd            !
       or             /tcb/auth/files//
A/UX 3.0s             /tcb/files/auth/?/*
BSD4.3-Reno           /etc/master.passwd              *
ConvexOS 10           /etc/shadpw                     *
ConvexOS 11           /etc/shadow                     *
DG/UX                 /etc/tcb/aa/user/               *
EP/IX                 /etc/shadow                     x
HP-UX                 /.secure/etc/passwd             *
IRIX 5                /etc/shadow                     x
Linux 1.1             /etc/shadow                     *
OSF/1                 /etc/passwd[.dir|.pag]          *
SCO Unix #.2.x        /tcb/auth/files//
SunOS4.1+c2           /etc/security/passwd.adjunct    ##username
SunOS 5.0             /etc/shadow
                      
System V Release 4.0  /etc/shadow                     x
System V Release 4.2  /etc/security/* database
Ultrix 4              /etc/auth[.dir|.pag]            *
UNICOS                /etc/udb                        *


05. What is NIS/yp?

NIS (Network Information System) in the current name for what was once known as yp (Yellow Pages). The purpose for NIS is to allow many machines on a network to share configuration information, including password data. NIS is not designed to promote system security. If your system uses NIS you will have a very short /etc/passwd file with a line that looks like this:

+::0:0:::

To view the real password file use this command "ypcat passwd"


06. What are those weird characters after the comma in my passwd file?

The characters are password aging data. Password aging forces the user to change passwords after a System Administrator specified period of time. Password aging can also force a user to keep a password for a certain number of weeks before changing it.

]
] Sample entry from /etc/passwd with password aging installed:
]
] will:5fg63fhD3d,M.z8:9406:12:Will Spencer:/home/fsg/will:/bin/bash
]

Note the comma in the encrypted password field. The characters after the comma are used by the password aging mechanism.

]
] Password aging characters from above example:
]
] M.z8
]

The four characters are interpreted as follows:

  1: Maximum number of weeks a password can be used without changing.
  2: Minimum number of weeks a password must be used before changing.
3&4: Last time password was changed, in number of weeks since 1970.

Three special cases should be noted:

If the first and second characters are set to '..' the user will be forced to change his/her passwd the next time he/she logs in. The passwd program will then remove the passwd aging characters, and the user will not be subjected to password aging requirements again.

If the third and fourth characters are set to '..' the user will be forced to change his/her passwd the next time he/she logs in. Password aging will then occur as defined by the first and second characters.

If the first character (MAX) is less than the second character (MIN), the user is not allowed to change his/her password. Only root can change that users password.

It should also be noted that the su command does not check the password aging data. An account with an expired password can be su'd to without being forced to change the password.

                        Password Aging Codes
+------------------------------------------------------------------------+
|                                                                        |
| Character:  .  /  0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F  G  H |
|    Number:  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 |
|                                                                        |
| Character:  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  a  b |
|    Number: 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 |
|                                                                        |
| Character:  c  d  e  f  g  h  i  j  k  l  m  n  o  p  q  r  s  t  u  v |
|    Number: 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 |
|                                                                        |
| Character:  w  x  y  z                                                 |
|    Number: 60 61 62 63                                                 |
|                                                                        |
+------------------------------------------------------------------------+


07. How do I access the password file under VMS?

Under VMS, the password file is SYS$SYSTEM:SYSUAF.DAT. However, unlike Unix, most users do not have access to read the password file.


08. How do I crack VMS passwords?

Write a program that uses the SYS$GETUAF functions to compare the results of encrypted words against the encrypted data in SYSUAF.DAT.

Two such programs are known to exist, CHECK_PASSWORD and GUESS_PASSWORD.


09. How do I break out of a restricted shell?

On poorly implemented restricted shells you can break out of the restricted environment by running a program that features a shell function. A good example is vi. Run vi and use this command:

:set shell=/bin/sh

then shell using this command:

:shell


10. How do I gain root from a suid script or program?

1. Change IFS.

If the program calls any other programs using the system() function call, you may be able to fool it by changing IFS. IFS is the Internal Field Separator that the shell uses to delimit arguments.

If the program contains a line that looks like this:

system("/bin/date")

and you change IFS to '/' the shell will them interpret the proceeding line as:

bin date

Now, if you have a program of your own in the path called "bin" the suid program will run your program instead of /bin/date.

To change IFS, use this command:

IFS='/';export IFS      # Bourne Shell
setenv IFS '/'          # C Shell
export IFS='/'          # Korn Shell

2. link the script to -i

Create a symbolic link named "-i" to the program. Running "-i" will cause the interpreter shell (/bin/sh) to start up in interactive mode. This only works on suid shell scripts.

Example:

% ln suid.sh -i
% -i
#

3. Exploit a race condition

Replace a symbolic link to the program with another program while the kernel is loading /bin/sh.

Example:

nice -19 suidprog ; ln -s evilprog suidroot

4. Send bad input to the program.

Invoke the name of the program and a separate command on the same command line.

Example:

suidprog ; id


11. How do I erase my presence from the system logs?

Edit /etc/utmp, /usr/adm/wtmp and /usr/adm/lastlog. These are not text files that can be edited by hand with vi, you must use a program specifically written for this purpose.

Example: erase.c


12. How do I send fakemail?

Telnet to port 25 of the machine you want the mail to appear to originate from. Enter your message as in this example:

 HELO bellcore.com
 MAIL FROM:Voyager@bellcore.com
 RCPT TO:president@whitehouse.gov
 DATA

	Please discontinue your silly Clipper initiative.
 .
 QUIT

On systems that have RFC 931 implemented, spoofing your "MAIL FROM:" line will not work. Test by sending yourself fakemail first.

For more informationm read RFC 822 "Standard for the format of ARPA Internet text messages."


13. How do I fake posts to UseNet?

Use inews to post. Give inews the following lines:

 From:
 Newsgroups:
 Subject:
 Message-ID:
 Date:
 Organization:

For a moderated newsgroup, inews will also require this line:

 Approved:

Then add your post and terminate with .

Example:

 From: Eric S. Real
 Newsgroups: alt.hackers
 Subject: Pathetic bunch of wannabe losers
 Message-ID: 
 Date: Fri, 13 Aug 1994 12:15:03
 Organization: Moral Majority

 A pathetic bunch of wannabe losers is what most of you are, with no
 right to steal the honorable title of `hacker' to puff up your silly
 adolescent egos. Get stuffed, get lost, and go to jail.

                                        Eric S. Real 


 ^D

Note that many systems will append an Originator: line to your message header, effectively revealing the account from which the message was posted.


14. How do I hack ChanOp on IRC?

Find a server that is split from the rest of IRC and create your own channel there using the name of the channel you want ChanOp on. When that server reconnects to the net, you will have ChanOp on the real channel. If you have ServerOp on a server, you can cause it to split on purpose.


15. How do I modify the IRC client to hide my real username?

Get the IRC client from cs.bu.edu /irc/clients. Look at the source code files irc.c and ctcp.c. The code you are looking for is fairly easy to spot. Change it. Change the username code in irc.c and the ctcp information code in ctcp.c. Compile and run your client.

Here are the diffs from a sample hack of the IRC client. Your client code will vary slightly depending on what IRC client version you are running.

Example: irc-diffs


16. How to I change to directories with strange characters in them?

These directories are often used by people trying to hide information, most often warez (commercial software).

There are several things you can do to determine what these strange characters are. One is to use the arguments to the ls command that cause ls to give you more information:

>From the man page for ls:

    -F   Causes directories to be marked with a trailing ``/'',
	 executable files to be marked with a trailing ``*'', and
	 symbolic links to be marked with a trailing ``@'' symbol.

    -q   Forces printing of non-graphic characters in filenames as the
	 character ``?''.

    -b   Forces printing of non-graphic characters in the \ddd
	 notation, in octal.

Perhaps the most useful tool is to simply do an "ls -al filename" to save the directory of the remote ftp site as a file on your local machine. Then you can do a "cat -t -v -e filename" to see exactly what those bizarre little characters are.

>From the man page for cat:

    -v  Causes non-printing characters (with the exception of tabs,
	newlines, and form feeds) to be displayed.  Control characters
	are displayed as ^X (x), where X is the key pressed with
	the  key (for example, m is displayed as ^M).  The
	 character (octal 0177) is printed as ^?.  Non-ASCII
	characters (with the high bit set) are printed as M -x, where
	x is the character specified by the seven low order bits.

    -t  Causes tabs to be printed as ^I and form feeds as ^L.  This
	option is ignored if the -v option is not specified.

    -e  Causes a ``$'' character to be printed at the end of each line
	(prior to the new-line).  This option is ignored if the -v
	option is not set.

If the directory name includes a or a you will need to enclose the entire directory name in quotes. Example:

cd ".."

On an IBM-PC, you may enter these special characters by holding down the key and entering the decimal value of the special character on your numeric keypad. When you release the key, the special character should appear on your screen. An ASCII chart can be very helpful.

Sometimes people will create directories with some of the standard stty control characters in them, such as ^Z (suspend) or ^C (intr). To get into those directories, you will first need to user stty to change the control character in qustion to another character.

From the man page for stty:

    Control assignments

    control-character C
                      Sets control-character to C, where control-character is
                      erase, kill, intr (interrupt), quit, eof, eol, swtch
                      (switch), start, stop or susp.

                      start and stop are available as possible control char-
                      acters for the control-character C assignment.

                      If C is preceded by a caret (^) (escaped from the
                      shell), then the value used is the corresponding con-
                      trol character (for example, ^D is a d; ^? is
                      interpreted as DELETE and ^- is interpreted as unde-
                      fined).

Use the stty -a command to see your current stty settings, and to determine which one is causing you problems.


17. What is ethernet sniffing?

Ethernet sniffing is listening (with software) to the raw ethernet device for packets that interest you. When your software sees a packet that fits certain criteria, it logs it to a file. The most common criteria for an interesting packet is one that contains words like "login" or "password."

Many ethernet sniffers are available, here are a few that may be on your system now:

OS              Sniffer
~~              ~~~~~~~
HP/UX           nettl (monitor) & netfmt (display)
                nfswatch        /* Available via anonymous ftp           */
Irix            nfswatch        /* Available via anonymous ftp           */
                Etherman
SunOS           etherfind
                nfswatch        /* Available via anonymous ftp           */
Solaris         snoop
DOS             ETHLOAD         /* Available via anonymous ftp as        */
                                /* ethld104.zip                          */
                The Gobbler     /* Available via anonymous ftp           */
                LanPatrol
                LanWatch
		Netmon
                Netwatch
                Netzhack        /* Available via anonymous ftp at        */
                                /* mistress.informatik.unibw-muenchen.de */
                                /* /pub/netzhack.mac                     */
Macintosh       Etherpeek

Here is source code for an ethernet sniffer: Esniff.c


18. What is an Internet Outdial?

An Internet outdial is a modem connected to the Internet than you can use to dial out. Normal outdials will only call local numbers. A GOD (Global OutDial) is capable of calling long distance. Outdials are an inexpensive method of calling long distance BBS's.


19. What are some Internet Outdials?

Area    Address(s)                      Command(s)
------  ------------------------------- ---------------------
201     128.112.88.0
	128.112.88.1
	128.112.88.2
	128.112.88.3
204     umnet.cc.manitoba.ca            "dial12" or "dial24"
206     dialout24.cac.washington.edu
215     wiseowl.ocis.temple.edu         atz
					atdt 9xxxyyyy
	129.72.1.59                     hayes compat
218     aa28.d.umn.edu                  cli
					rlogin modem
					at "login:" type 
					"modem"
	modem.d.umn.edu                 "Hayes"
232     isn.rdns.iastate.edu            MODEM              [Works!!]
					atz 
					atdt8xxx-xxxx
303     129.82.100.64                   login: modem       [need password!]
307     modem.uwyo.edu
	129.72.1.59                     hayes compat
313     35.1.1.6                        "dial2400-aa" or   [can't connect]
					"dial1200-aa"
315     198.36.22.3                     "modem"
404     emory.edu                       .modem8 or
					.dialout
	broadband.cc.emory.edu          .modem8 or
					.dialout
	128.140.1.239                   .modem8|CR
					or .modem96|CR
412     gate.cis.pitt.edu               LAT
					connect dialout
					^E
					atdt 91k xxx-xxxx
415     128.32.132.250                  "dial1" or "dial2"
416     pacx.utcs.utoronto.ca           modem
					atdt 9xxx-xxxx
502     uknet.uky.edu                   outdial2400
					atdt 9xxx-xxxx
510     annex132-1.eecs.berkeley.edu    atdt 9,,,,, xxx-xxxx
514     132.204.2.11                    externe#9 9xxx-xxxx
515     isn.rdns.iastate.edu            login MODEM 
					dial atdt8xxx-yyyy
602     129.219.17.3                    atdt8,,,,,xyyyxxxyyyy
	                                login: MODEM
					atdt 8xxx-xxxx
609     129.72.1.59                     "Hayes"
	128.119.131.110                 "Hayes"
	128.119.131.111         
	128.119.131.112
	128.119.131.113
	128.119.131.114
	128.112.131.110
	128.112.131.111
	128.112.131.112
	128.112.131.113
	128.112.131.114                 the above are hayes
614     ns2400.ircc.ohio-state.edu      DIAL               [can't connect]
615     dca.utk.edu                     "dial2400"
617     dialout.lcs.mit.edu
619     dialin.ucsd.edu                 "dialout"
	128.54.30.1                     nue
713     128.143.70.101                  "connect hayes"
	128.249.27.154                  c modem96
					atdt 9xxx-xxxx
	128.249.27.153                  " -+ as above +- "
	modem24.bcm.tmc.edu
	modem12.bcm.tmc.edu
714     130.191.4.70                    atdt 8xxx-xxxx
804     ublan.acc.virginia.edu          c hayes
	128.143.70.101                  connect hayes
					atdt xxx-xxxx
902     star.ccs.tuns.ca                "dialout"          [down...]
916     128.120.2.251                   "dialout"          [down...]
	129.137.33.72                                      [can't connect]
???     dialout1.princeton.edu                             [can't connect]
	dswitch.byu.edu                 "C Modem"          [can't connect]
	modem.cis.uflu.edu                                 [can't connect]
	r596adi1.uc.edu                                    [can't connect]
	vtnet1.cns.ut.edu               "CALL" or "call"   [can't connect]
	18.26.0.55                                         [can't connect]
	128.173.5.4                                        [need password!]
	128.187.1.2                                        [need password!]
	129.137.33.71                                      [can't connect]
	bstorm.bga.com / port=4000                         [what is this?]


20. What is this system?

AIX

IBM AIX Version 3 for RISC System/6000
(C) Copyrights by IBM and by others 1982, 1990.
login:

You will know an AIX system because it is the only Unix system that clears the screen and issues a login prompt near the bottom of the screen.

AS/400

UserID?
Password?

Once in, type GO MAIN

CDC Cyber

WELCOME TO THE NOS SOFTWARE SYSTEM.
COPYRIGHT CONTROL DATA 1978, 1987.

88/02/16. 02.36.53. N265100
CSUS CYBER 170-730.                     NOS 2.5.2-678/3.
FAMILY:

You would normally just hit return at the family prompt. Next prompt is:

USER NAME:

CISCO Router

                             FIRST BANK OF TNO
                           95-866 TNO VirtualBank
                          REMOTE Router -  TN043R1

                                Console Port

                                SN - 00000866

TN043R1>

DECserver

DECserver 700-08 Communications Server V1.1 (BL44G-11A) - LAT V5.1
DPS502-DS700

(c) Copyright 1992, Digital Equipment Corporation - All Rights Reserved

Please type HELP if you need assistance

Enter username> TNO

Local>

Hewlett Packard MPE-XL

MPE XL:
EXPECTED A :HELLO COMMAND. (CIERR 6057)
MPE XL:
EXPECTED [SESSION NAME,] USER.ACCT [,GROUP]   (CIERR 1424)
MPE XL:

GTN

WELCOME TO CITIBANK. PLEASE SIGN ON.
XXXXXXXX

@
PASSWORD =

@

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

PLEASE ENTER YOUR ID:-1->
PLEASE ENTER YOUR PASSWORD:-2->

CITICORP (CITY NAME). KEY GHELP FOR HELP.
  XXX.XXX
 PLEASE SELECT SERVICE REQUIRED.-3->

Lantronix Terminal Server

Lantronix ETS16 Version V3.1/1(940623)

Type HELP at the 'Local_15> ' prompt for assistance.

Login password>

Meridian Mail (Northern Telecom Phone/Voice Mail System)

                            MMM       MMMERIDIAN
                           MMMMM     MMMMM
                         MMMMMM   MMMMMM
                        MMM  MMMMM  MMM     MMMMM     MMMMM
                      MMM   MMM   MMM     MMMMMM   MMMMMM
                     MMM         MMM     MMM MMM MMM MMM
                    MMM         MMM     MMM  MMMMM  MMM
                   MMM         MMM     MMM   MMM   MMM
                  MMM         MMM     MMM         MMM
                 MMM         MMM     MMM         MMM
                MMM         MMM     MMM         MMM
               MMM         MMM     MMM         MMM
              MMM         MMM     MMM         MMM

                                          Copyright (c) Northern Telecom, 1991

Novell ONLAN

N

To access the systems it is best to own a copy of ONLAN/PC.

PC-Anywhere

P

To access the systems it is best to own a copy of PCAnywhere Remote.

PRIMOS

PRIMENET 19.2.7F PPOA1



ER!

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

CONNECT
Primenet V 2.3  (system)
LOGIN           (you)
User id?        (system)
SAPB5           (you)
Password?       (system)
DROWSAP         (you)
OK,             (system)

ROLM-OSL

MARAUDER10292  01/09/85(^G) 1 03/10/87  00:29:47
RELEASE 8003
OSL, PLEASE.
?

System75

Login: root
INCORRECT LOGIN

Login: browse
Password:

Software Version: G3s.b16.2.2

Terminal Type (513, 4410, 4425): [513]

Tops-10

NIH Timesharing

NIH Tri-SMP 7.02-FF  16:30:04 TTY11
system 1378/1381/1453 Connected to Node Happy(40) Line # 12
Please LOGIN
.

VM/370

VM/370
!

VM/ESA

VM/ESA ONLINE

                                          TBVM2 VM/ESA Rel 1.1     PUT 9200

Fill in your USERID and PASSWORD and press ENTER
(Your password will not appear when you type it)
USERID   ===>
PASSWORD ===>

COMMAND  ===>

Xylogics Annex Communications Server

Annex Command Line Interpreter   *   Copyright 1991 Xylogics, Inc.

Checking authorization, Please wait...
Annex username: TNO
Annex password:

Permission granted
annex:


21. What are the default accounts for XXX?

AIX

guest           guest

AS/400

qsecofr         qsecofr         /* master security officer */
qsysopr         qsysopr         /* system operator         */
qpgmr           qpgmr           /* default programmer      */

also

ibm/password
ibm/2222
ibm/service
qsecofr/1111111
qsecofr/2222222
qsvr/qsvr
secofr/secofr

DECserver

ACCESS
SYSTEM

Hewlett Packard MPE-XL

HELLO           MANAGER.SYS
HELLO           MGR.SYS
HELLO           FIELD.SUPPORT     HPUNSUP or SUPPORT or HP
HELLO           OP.OPERATOR
MGR             CAROLIAN
MGR             CCC
MGR             CNAS
MGR             CONV
MGR             COGNOS
OPERATOR        COGNOS
MANAGER         COGNOS
OPERATOR        DISC
MGR             HPDESK
MGR             HPWORD
FIELD           HPWORD
MGR             HPOFFICE
SPOOLMAN        HPOFFICE
ADVMAIL         HPOFFICE
MAIL            HPOFFICE
WP              HPOFFICE
MANAGER         HPOFFICE
MGR             HPONLY
FIELD           HPP187
MGR             HPP187
MGR             HPP189
MGR             HPP196
MGR             INTX3
MGR             ITF3000
MANAGER         ITF3000
MAIL            MAIL
MGR             NETBASE
MGR             REGO
MGR             RJE
MGR             ROBELLE
MANAGER         SECURITY
MGR             SECURITY
FIELD           SERVICE
MANAGER         SYS
MGR             SYS
PCUSER          SYS
RSBCMON         SYS
OPERATOR        SYS
OPERATOR        SYSTEM
FIELD           SUPPORT
OPERATOR        SUPPORT
MANAGER         TCH
MAIL            TELESUP
MANAGER         TELESUP
MGR             TELESUP
SYS             TELESUP
MGE             VESOFT
MGE             VESOFT
MGR             WORD
MGR             XLSERVER

Common jobs are Pub, Sys, Data. Common passwords are HPOnly, TeleSup, HP, MPE, Manager, MGR, Remote.

Major BBS

Sysop           Sysop

PICK O/S

DSA             # Desquetop System Administrator
DS
DESQUETOP
PHANTOM

Prolog

PBX             PBX
NETWORK         NETWORK
NETOP           

Rolm

CBX Defaults

op              op
op              operator
su              super
admin           pwp
eng             engineer


PhoneMail Defaults

sysadmin        sysadmin
tech            tech
poll            tech

RSX

SYSTEM/SYSTEM   (Username SYSTEM, Password SYSTEM)
1,1/system      (Directory [1,1] Password SYSTEM)
BATCH/BATCH
SYSTEM/MANAGER
USER/USER
Default accounts for Micro/RSX:
		MICRO/RSX

Alternately you can hit when the boot sequence asks you for the date and create an account using:

		RUN ACNT
	    or  RUN $ACNT

(Numbers below 10 {oct} are Priveleged)

Reboot and wait for the date/time question. Type ^C and at the MCR prompt, type "abo at." You must include the . (dot)!

If this works, type "acs lb0:/blks=1000" to get some swap space so the new step won't wedge.

type " run $acnt" and change the password of any account with a group number of 7 or less.

You may find that the ^C does not work. Try ^Z and ESC as well. Also try all 3 as terminators to valid and invalid times.

If none of the above work, use the halt switch to halt the system, just after a invalid date-time. Look for a user mode PSW 1[4-7]xxxx. then deposit 177777 into R6, cross your fingers, write protect the drive and continue the system. This will hopefully result in indirect blowing up... And hopefully the system has not been fully secured.

System 75

bcim            bcimpw
bciim           bciimpw
bcms            bcmspw, bcms
bcnas           bcnspw
blue            bluepw
browse          looker, browsepw
craft           crftpw, craftpw, crack
cust            custpw
enquiry         enquirypw
field           support
inads           indspw, inadspw, inads
init            initpw
kraft           kraftpw
locate          locatepw
maint           maintpw, rwmaint
nms             nmspw
rcust           rcustpw
support         supportpw
tech            field

Taco Bell

rgm             rollout
tacobell        

Verifone Junior 2.05

Default password: 166816

VMS

field           service
systest         utep


22. What port is XXX on?

The file /etc/services on most Unix machines lists the activity occurring on each port. Here is the most complete port list in existence, originally presented in RFC 1340:

Keyword         Decimal    Description
-------         -------    -----------
                  0/tcp    Reserved
                  0/udp    Reserved
tcpmux            1/tcp    TCP Port Service Multiplexer
tcpmux            1/udp    TCP Port Service Multiplexer
compressnet       2/tcp    Management Utility
compressnet       2/udp    Management Utility
compressnet       3/tcp    Compression Process
compressnet       3/udp    Compression Process
                  4/tcp    Unassigned
                  4/udp    Unassigned
rje               5/tcp    Remote Job Entry
rje               5/udp    Remote Job Entry
                  6/tcp    Unassigned
                  6/udp    Unassigned
echo              7/tcp    Echo
echo              7/udp    Echo
                  8/tcp    Unassigned
                  8/udp    Unassigned
discard           9/tcp    Discard
discard           9/udp    Discard
                 10/tcp    Unassigned
                 10/udp    Unassigned
systat           11/tcp    Active Users
systat           11/udp    Active Users
                 12/tcp    Unassigned
                 12/udp    Unassigned
daytime          13/tcp    Daytime
daytime          13/udp    Daytime
                 14/tcp    Unassigned
                 14/udp    Unassigned
                 15/tcp    Unassigned [was netstat]
                 15/udp    Unassigned
                 16/tcp    Unassigned
                 16/udp    Unassigned
qotd             17/tcp    Quote of the Day
qotd             17/udp    Quote of the Day
msp              18/tcp    Message Send Protocol
msp              18/udp    Message Send Protocol
chargen          19/tcp    Character Generator
chargen          19/udp    Character Generator
ftp-data         20/tcp    File Transfer [Default Data]
ftp-data         20/udp    File Transfer [Default Data]
ftp              21/tcp    File Transfer [Control]
ftp              21/udp    File Transfer [Control]
                 22/tcp    Unassigned
                 22/udp    Unassigned
telnet           23/tcp    Telnet
telnet           23/udp    Telnet
                 24/tcp    any private mail system
                 24/udp    any private mail system
smtp             25/tcp    Simple Mail Transfer
smtp             25/udp    Simple Mail Transfer
                 26/tcp    Unassigned
                 26/udp    Unassigned
nsw-fe           27/tcp    NSW User System FE
nsw-fe           27/udp    NSW User System FE
                 28/tcp    Unassigned
                 28/udp    Unassigned
msg-icp          29/tcp    MSG ICP
msg-icp          29/udp    MSG ICP
                 30/tcp    Unassigned
                 30/udp    Unassigned
msg-auth         31/tcp    MSG Authentication
msg-auth         31/udp    MSG Authentication
                 32/tcp    Unassigned
                 32/udp    Unassigned
dsp              33/tcp    Display Support Protocol
dsp              33/udp    Display Support Protocol
                 34/tcp    Unassigned
                 34/udp    Unassigned
                 35/tcp    any private printer server
                 35/udp    any private printer server
                 36/tcp    Unassigned
                 36/udp    Unassigned
time             37/tcp    Time
time             37/udp    Time
                 38/tcp    Unassigned
                 38/udp    Unassigned
rlp              39/tcp    Resource Location Protocol
rlp              39/udp    Resource Location Protocol
                 40/tcp    Unassigned
                 40/udp    Unassigned
graphics         41/tcp    Graphics
graphics         41/udp    Graphics
nameserver       42/tcp    Host Name Server
nameserver       42/udp    Host Name Server
nicname          43/tcp    Who Is
nicname          43/udp    Who Is
mpm-flags        44/tcp    MPM FLAGS Protocol
mpm-flags        44/udp    MPM FLAGS Protocol
mpm              45/tcp    Message Processing Module [recv]
mpm              45/udp    Message Processing Module [recv]
mpm-snd          46/tcp    MPM [default send]
mpm-snd          46/udp    MPM [default send]
ni-ftp           47/tcp    NI FTP
ni-ftp           47/udp    NI FTP
                 48/tcp    Unassigned
                 48/udp    Unassigned
login            49/tcp    Login Host Protocol
login            49/udp    Login Host Protocol
re-mail-ck       50/tcp    Remote Mail Checking Protocol
re-mail-ck       50/udp    Remote Mail Checking Protocol
la-maint         51/tcp    IMP Logical Address Maintenance
la-maint         51/udp    IMP Logical Address Maintenance
xns-time         52/tcp    XNS Time Protocol
xns-time         52/udp    XNS Time Protocol
domain           53/tcp    Domain Name Server
domain           53/udp    Domain Name Server
xns-ch           54/tcp    XNS Clearinghouse
xns-ch           54/udp    XNS Clearinghouse
isi-gl           55/tcp    ISI Graphics Language
isi-gl           55/udp    ISI Graphics Language
xns-auth         56/tcp    XNS Authentication
xns-auth         56/udp    XNS Authentication
                 57/tcp    any private terminal access
                 57/udp    any private terminal access
xns-mail         58/tcp    XNS Mail
xns-mail         58/udp    XNS Mail
                 59/tcp    any private file service
                 59/udp    any private file service
                 60/tcp    Unassigned
                 60/udp    Unassigned
ni-mail          61/tcp    NI MAIL
ni-mail          61/udp    NI MAIL
acas             62/tcp    ACA Services
acas             62/udp    ACA Services
via-ftp          63/tcp    VIA Systems - FTP
via-ftp          63/udp    VIA Systems - FTP
covia            64/tcp    Communications Integrator (CI)
covia            64/udp    Communications Integrator (CI)
tacacs-ds        65/tcp    TACACS-Database Service
tacacs-ds        65/udp    TACACS-Database Service
sql*net          66/tcp    Oracle SQL*NET
sql*net          66/udp    Oracle SQL*NET
bootps           67/tcp    Bootstrap Protocol Server
bootps           67/udp    Bootstrap Protocol Server
bootpc           68/tcp    Bootstrap Protocol Client
bootpc           68/udp    Bootstrap Protocol Client
tftp             69/tcp    Trivial File Transfer
tftp             69/udp    Trivial File Transfer
gopher           70/tcp    Gopher
gopher           70/udp    Gopher
netrjs-1         71/tcp    Remote Job Service
netrjs-1         71/udp    Remote Job Service
netrjs-2         72/tcp    Remote Job Service
netrjs-2         72/udp    Remote Job Service
netrjs-3         73/tcp    Remote Job Service
netrjs-3         73/udp    Remote Job Service
netrjs-4         74/tcp    Remote Job Service
netrjs-4         74/udp    Remote Job Service
                 75/tcp    any private dial out service
                 75/udp    any private dial out service
                 76/tcp    Unassigned
                 76/udp    Unassigned
                 77/tcp    any private RJE service
                 77/udp    any private RJE service
vettcp           78/tcp    vettcp
vettcp           78/udp    vettcp
finger           79/tcp    Finger
finger           79/udp    Finger
www              80/tcp    World Wide Web HTTP
www              80/udp    World Wide Web HTTP
hosts2-ns        81/tcp    HOSTS2 Name Server
hosts2-ns        81/udp    HOSTS2 Name Server
xfer             82/tcp    XFER Utility
xfer             82/udp    XFER Utility
mit-ml-dev       83/tcp    MIT ML Device
mit-ml-dev       83/udp    MIT ML Device
ctf              84/tcp    Common Trace Facility
ctf              84/udp    Common Trace Facility
mit-ml-dev       85/tcp    MIT ML Device
mit-ml-dev       85/udp    MIT ML Device
mfcobol          86/tcp    Micro Focus Cobol
mfcobol          86/udp    Micro Focus Cobol
                 87/tcp    any private terminal link
                 87/udp    any private terminal link
kerberos         88/tcp    Kerberos
kerberos         88/udp    Kerberos
su-mit-tg        89/tcp    SU/MIT Telnet Gateway
su-mit-tg        89/udp    SU/MIT Telnet Gateway
dnsix            90/tcp    DNSIX Securit Attribute Token Map
dnsix            90/udp    DNSIX Securit Attribute Token Map
mit-dov          91/tcp    MIT Dover Spooler
mit-dov          91/udp    MIT Dover Spooler
npp              92/tcp    Network Printing Protocol
npp              92/udp    Network Printing Protocol
dcp              93/tcp    Device Control Protocol
dcp              93/udp    Device Control Protocol
objcall          94/tcp    Tivoli Object Dispatcher
objcall          94/udp    Tivoli Object Dispatcher
supdup           95/tcp    SUPDUP
supdup           95/udp    SUPDUP
dixie            96/tcp    DIXIE Protocol Specification
dixie            96/udp    DIXIE Protocol Specification
swift-rvf        97/tcp    Swift Remote Vitural File Protocol
swift-rvf        97/udp    Swift Remote Vitural File Protocol
tacnews          98/tcp    TAC News
tacnews          98/udp    TAC News
metagram         99/tcp    Metagram Relay
metagram         99/udp    Metagram Relay
newacct         100/tcp    [unauthorized use]
hostname        101/tcp    NIC Host Name Server
hostname        101/udp    NIC Host Name Server
iso-tsap        102/tcp    ISO-TSAP
iso-tsap        102/udp    ISO-TSAP
gppitnp         103/tcp    Genesis Point-to-Point Trans Net
gppitnp         103/udp    Genesis Point-to-Point Trans Net
acr-nema        104/tcp    ACR-NEMA Digital Imag. & Comm. 300
acr-nema        104/udp    ACR-NEMA Digital Imag. & Comm. 300
csnet-ns        105/tcp    Mailbox Name Nameserver
csnet-ns        105/udp    Mailbox Name Nameserver
3com-tsmux      106/tcp    3COM-TSMUX
3com-tsmux      106/udp    3COM-TSMUX
rtelnet         107/tcp    Remote Telnet Service
rtelnet         107/udp    Remote Telnet Service
snagas          108/tcp    SNA Gateway Access Server
snagas          108/udp    SNA Gateway Access Server
pop2            109/tcp    Post Office Protocol - Version 2
pop2            109/udp    Post Office Protocol - Version 2
pop3            110/tcp    Post Office Protocol - Version 3
pop3            110/udp    Post Office Protocol - Version 3
sunrpc          111/tcp    SUN Remote Procedure Call
sunrpc          111/udp    SUN Remote Procedure Call
mcidas          112/tcp    McIDAS Data Transmission Protocol
mcidas          112/udp    McIDAS Data Transmission Protocol
auth            113/tcp    Authentication Service
auth            113/udp    Authentication Service
audionews       114/tcp    Audio News Multicast
audionews       114/udp    Audio News Multicast
sftp            115/tcp    Simple File Transfer Protocol
sftp            115/udp    Simple File Transfer Protocol
ansanotify      116/tcp    ANSA REX Notify
ansanotify      116/udp    ANSA REX Notify
uucp-path       117/tcp    UUCP Path Service
uucp-path       117/udp    UUCP Path Service
sqlserv         118/tcp    SQL Services
sqlserv         118/udp    SQL Services
nntp            119/tcp    Network News Transfer Protocol
nntp            119/udp    Network News Transfer Protocol
cfdptkt         120/tcp    CFDPTKT
cfdptkt         120/udp    CFDPTKT
erpc            121/tcp    Encore Expedited Remote Pro.Call
erpc            121/udp    Encore Expedited Remote Pro.Call
smakynet        122/tcp    SMAKYNET
smakynet        122/udp    SMAKYNET
ntp             123/tcp    Network Time Protocol
ntp             123/udp    Network Time Protocol
ansatrader      124/tcp    ANSA REX Trader
ansatrader      124/udp    ANSA REX Trader
locus-map       125/tcp    Locus PC-Interface Net Map Ser
locus-map       125/udp    Locus PC-Interface Net Map Ser
unitary         126/tcp    Unisys Unitary Login
unitary         126/udp    Unisys Unitary Login
locus-con       127/tcp    Locus PC-Interface Conn Server
locus-con       127/udp    Locus PC-Interface Conn Server
gss-xlicen      128/tcp    GSS X License Verification
gss-xlicen      128/udp    GSS X License Verification
pwdgen          129/tcp    Password Generator Protocol
pwdgen          129/udp    Password Generator Protocol
cisco-fna       130/tcp    cisco FNATIVE
cisco-fna       130/udp    cisco FNATIVE
cisco-tna       131/tcp    cisco TNATIVE
cisco-tna       131/udp    cisco TNATIVE
cisco-sys       132/tcp    cisco SYSMAINT
cisco-sys       132/udp    cisco SYSMAINT
statsrv         133/tcp    Statistics Service
statsrv         133/udp    Statistics Service
ingres-net      134/tcp    INGRES-NET Service
ingres-net      134/udp    INGRES-NET Service
loc-srv         135/tcp    Location Service
loc-srv         135/udp    Location Service
profile         136/tcp    PROFILE Naming System
profile         136/udp    PROFILE Naming System
netbios-ns      137/tcp    NETBIOS Name Service
netbios-ns      137/udp    NETBIOS Name Service
netbios-dgm     138/tcp    NETBIOS Datagram Service
netbios-dgm     138/udp    NETBIOS Datagram Service
netbios-ssn     139/tcp    NETBIOS Session Service
netbios-ssn     139/udp    NETBIOS Session Service
emfis-data      140/tcp    EMFIS Data Service
emfis-data      140/udp    EMFIS Data Service
emfis-cntl      141/tcp    EMFIS Control Service
emfis-cntl      141/udp    EMFIS Control Service
bl-idm          142/tcp    Britton-Lee IDM
bl-idm          142/udp    Britton-Lee IDM
imap2           143/tcp    Interim Mail Access Protocol v2
imap2           143/udp    Interim Mail Access Protocol v2
news            144/tcp    NewS
news            144/udp    NewS
uaac            145/tcp    UAAC Protocol
uaac            145/udp    UAAC Protocol
iso-tp0         146/tcp    ISO-IP0
iso-tp0         146/udp    ISO-IP0
iso-ip          147/tcp    ISO-IP
iso-ip          147/udp    ISO-IP
cronus          148/tcp    CRONUS-SUPPORT
cronus          148/udp    CRONUS-SUPPORT
aed-512         149/tcp    AED 512 Emulation Service
aed-512         149/udp    AED 512 Emulation Service
sql-net         150/tcp    SQL-NET
sql-net         150/udp    SQL-NET
hems            151/tcp    HEMS
hems            151/udp    HEMS
bftp            152/tcp    Background File Transfer Program
bftp            152/udp    Background File Transfer Program
sgmp            153/tcp    SGMP
sgmp            153/udp    SGMP
netsc-prod      154/tcp    NETSC
netsc-prod      154/udp    NETSC
netsc-dev       155/tcp    NETSC
netsc-dev       155/udp    NETSC
sqlsrv          156/tcp    SQL Service
sqlsrv          156/udp    SQL Service
knet-cmp        157/tcp    KNET/VM Command/Message Protocol
knet-cmp        157/udp    KNET/VM Command/Message Protocol
pcmail-srv      158/tcp    PCMail Server
pcmail-srv      158/udp    PCMail Server
nss-routing     159/tcp   NSS-Routing
nss-routing     159/udp   NSS-Routing
sgmp-traps      160/tcp    SGMP-TRAPS
sgmp-traps      160/udp    SGMP-TRAPS
snmp            161/tcp    SNMP
snmp            161/udp    SNMP
snmptrap        162/tcp    SNMPTRAP
snmptrap        162/udp    SNMPTRAP
cmip-man        163/tcp    CMIP/TCP Manager
cmip-man        163/udp    CMIP/TCP Manager
cmip-agent      164/tcp    CMIP/TCP Agent
smip-agent      164/udp    CMIP/TCP Agent
xns-courier     165/tcp   Xerox
xns-courier     165/udp   Xerox
s-net           166/tcp    Sirius Systems
s-net           166/udp    Sirius Systems
namp            167/tcp    NAMP
namp            167/udp    NAMP
rsvd            168/tcp    RSVD
rsvd            168/udp    RSVD
send            169/tcp    SEND
send            169/udp    SEND
print-srv       170/tcp    Network PostScript
print-srv       170/udp    Network PostScript
multiplex       171/tcp    Network Innovations Multiplex
multiplex       171/udp    Network Innovations Multiplex
cl/1            172/tcp    Network Innovations CL/1
cl/1            172/udp    Network Innovations CL/1
xyplex-mux      173/tcp    Xyplex
xyplex-mux      173/udp    Xyplex
mailq           174/tcp    MAILQ
mailq           174/udp    MAILQ
vmnet           175/tcp    VMNET
vmnet           175/udp    VMNET
genrad-mux      176/tcp    GENRAD-MUX
genrad-mux      176/udp    GENRAD-MUX
xdmcp           177/tcp    X Display Manager Control Protocol
xdmcp           177/udp    X Display Manager Control Protocol
nextstep        178/tcp    NextStep Window Server
NextStep        178/udp    NextStep Window Server
bgp             179/tcp    Border Gateway Protocol
bgp             179/udp    Border Gateway Protocol
ris             180/tcp    Intergraph
ris             180/udp    Intergraph
unify           181/tcp    Unify
unify           181/udp    Unify
audit           182/tcp    Unisys Audit SITP
audit           182/udp    Unisys Audit SITP
ocbinder        183/tcp    OCBinder
ocbinder        183/udp    OCBinder
ocserver        184/tcp    OCServer
ocserver        184/udp    OCServer
remote-kis      185/tcp    Remote-KIS
remote-kis      185/udp    Remote-KIS
kis             186/tcp    KIS Protocol
kis             186/udp    KIS Protocol
aci             187/tcp    Application Communication Interface
aci             187/udp    Application Communication Interface
mumps           188/tcp    Plus Five's MUMPS
mumps           188/udp    Plus Five's MUMPS
qft             189/tcp    Queued File Transport
qft             189/udp    Queued File Transport
gacp            190/tcp    Gateway Access Control Protocol
cacp            190/udp    Gateway Access Control Protocol
prospero        191/tcp    Prospero
prospero        191/udp    Prospero
osu-nms         192/tcp    OSU Network Monitoring System
osu-nms         192/udp    OSU Network Monitoring System
srmp            193/tcp    Spider Remote Monitoring Protocol
srmp            193/udp    Spider Remote Monitoring Protocol
irc             194/tcp    Internet Relay Chat Protocol
irc             194/udp    Internet Relay Chat Protocol
dn6-nlm-aud     195/tcp    DNSIX Network Level Module Audit
dn6-nlm-aud     195/udp    DNSIX Network Level Module Audit
dn6-smm-red     196/tcp    DNSIX Session Mgt Module Audit Redir
dn6-smm-red     196/udp    DNSIX Session Mgt Module Audit Redir
dls             197/tcp    Directory Location Service
dls             197/udp    Directory Location Service
dls-mon         198/tcp    Directory Location Service Monitor
dls-mon         198/udp    Directory Location Service Monitor
smux            199/tcp    SMUX
smux            199/udp    SMUX
src             200/tcp    IBM System Resource Controller
src             200/udp    IBM System Resource Controller
at-rtmp         201/tcp    AppleTalk Routing Maintenance
at-rtmp         201/udp    AppleTalk Routing Maintenance
at-nbp          202/tcp    AppleTalk Name Binding
at-nbp          202/udp    AppleTalk Name Binding
at-3            203/tcp    AppleTalk Unused
at-3            203/udp    AppleTalk Unused
at-echo         204/tcp    AppleTalk Echo
at-echo         204/udp    AppleTalk Echo
at-5            205/tcp    AppleTalk Unused
at-5            205/udp    AppleTalk Unused
at-zis          206/tcp    AppleTalk Zone Information
at-zis          206/udp    AppleTalk Zone Information
at-7            207/tcp    AppleTalk Unused
at-7            207/udp    AppleTalk Unused
at-8            208/tcp    AppleTalk Unused
at-8            208/udp    AppleTalk Unused
tam             209/tcp    Trivial Authenticated Mail Protocol
tam             209/udp    Trivial Authenticated Mail Protocol
z39.50          210/tcp    ANSI Z39.50
z39.50          210/udp    ANSI Z39.50
914c/g          211/tcp    Texas Instruments 914C/G Terminal
914c/g          211/udp    Texas Instruments 914C/G Terminal
anet            212/tcp    ATEXSSTR
anet            212/udp    ATEXSSTR
ipx             213/tcp    IPX
ipx             213/udp    IPX
vmpwscs         214/tcp    VM PWSCS
vmpwscs         214/udp    VM PWSCS
softpc          215/tcp    Insignia Solutions
softpc          215/udp    Insignia Solutions
atls            216/tcp    Access Technology License Server
atls            216/udp    Access Technology License Server
dbase           217/tcp    dBASE Unix
dbase           217/udp    dBASE Unix
mpp             218/tcp    Netix Message Posting Protocol
mpp             218/udp    Netix Message Posting Protocol
uarps           219/tcp    Unisys ARPs
uarps           219/udp    Unisys ARPs
imap3           220/tcp    Interactive Mail Access Protocol v3
imap3           220/udp    Interactive Mail Access Protocol v3
fln-spx         221/tcp    Berkeley rlogind with SPX auth
fln-spx         221/udp    Berkeley rlogind with SPX auth
fsh-spx         222/tcp    Berkeley rshd with SPX auth
fsh-spx         222/udp    Berkeley rshd with SPX auth
cdc             223/tcp    Certificate Distribution Center
cdc             223/udp    Certificate Distribution Center
                224-241    Reserved
sur-meas        243/tcp    Survey Measurement
sur-meas        243/udp    Survey Measurement
link            245/tcp    LINK
link            245/udp    LINK
dsp3270         246/tcp    Display Systems Protocol
dsp3270         246/udp    Display Systems Protocol
                247-255    Reserved
pawserv         345/tcp    Perf Analysis Workbench
pawserv         345/udp    Perf Analysis Workbench
zserv           346/tcp    Zebra server
zserv           346/udp    Zebra server
fatserv         347/tcp    Fatmen Server
fatserv         347/udp    Fatmen Server
clearcase       371/tcp    Clearcase
clearcase       371/udp    Clearcase
ulistserv       372/tcp    Unix Listserv
ulistserv       372/udp    Unix Listserv
legent-1        373/tcp    Legent Corporation
legent-1        373/udp    Legent Corporation
legent-2        374/tcp    Legent Corporation
legent-2        374/udp    Legent Corporation
exec            512/tcp    remote process execution;
                           authentication performed using
                           passwords and UNIX login names
biff            512/udp    used by mail system to notify users
                           of new mail received; currently
                           receives messages only from
                           processes on the same machine
login           513/tcp    remote login a la telnet;
                           automatic authentication performed
                           based on priviledged port numbers
                           and distributed data bases which
                           identify "authentication domains"
who             513/udp    maintains data bases showing who's
                           logged in to machines on a local
                           net and the load average of the
                           machine
cmd             514/tcp    like exec, but automatic
                           authentication is performed as for
                           login server
syslog          514/udp
printer         515/tcp    spooler
printer         515/udp    spooler
talk            517/tcp    like tenex link, but across
                           machine - unfortunately, doesn't
                           use link protocol (this is actually
                           just a rendezvous port from which a
                           tcp connection is established)
talk            517/udp    like tenex link, but across
                           machine - unfortunately, doesn't
                           use link protocol (this is actually
                           just a rendezvous port from which a
                           tcp connection is established)
ntalk           518/tcp
ntalk           518/udp
utime           519/tcp    unixtime
utime           519/udp    unixtime
efs             520/tcp    extended file name server
router          520/udp    local routing process (on site);
                           uses variant of Xerox NS routing
                           information protocol
timed           525/tcp    timeserver
timed           525/udp    timeserver
tempo           526/tcp    newdate
tempo           526/udp    newdate
courier         530/tcp    rpc
courier         530/udp    rpc
conference      531/tcp    chat
conference      531/udp    chat
netnews         532/tcp    readnews
netnews         532/udp    readnews
netwall         533/tcp    for emergency broadcasts
netwall         533/udp    for emergency broadcasts
uucp            540/tcp    uucpd
uucp            540/udp    uucpd
klogin          543/tcp
klogin          543/udp
kshell          544/tcp    krcmd
kshell          544/udp    krcmd
new-rwho        550/tcp    new-who
new-rwho        550/udp    new-who
dsf             555/tcp
dsf             555/udp
remotefs        556/tcp    rfs server
remotefs        556/udp    rfs server
rmonitor        560/tcp    rmonitord
rmonitor        560/udp    rmonitord
monitor         561/tcp
monitor         561/udp
chshell         562/tcp    chcmd
chshell         562/udp    chcmd
9pfs            564/tcp    plan 9 file service
9pfs            564/udp    plan 9 file service
whoami          565/tcp    whoami
whoami          565/udp    whoami
meter           570/tcp    demon
meter           570/udp    demon
meter           571/tcp    udemon
meter           571/udp    udemon
ipcserver       600/tcp    Sun IPC server
ipcserver       600/udp    Sun IPC server
nqs             607/tcp    nqs
nqs             607/udp    nqs
mdqs            666/tcp
mdqs            666/udp
elcsd           704/tcp    errlog copy/server daemon
elcsd           704/udp    errlog copy/server daemon
netcp           740/tcp    NETscout Control Protocol
netcp           740/udp    NETscout Control Protocol
netgw           741/tcp    netGW
netgw           741/udp    netGW
netrcs          742/tcp    Network based Rev. Cont. Sys.
netrcs          742/udp    Network based Rev. Cont. Sys.
flexlm          744/tcp    Flexible License Manager
flexlm          744/udp    Flexible License Manager
fujitsu-dev     747/tcp    Fujitsu Device Control
fujitsu-dev     747/udp    Fujitsu Device Control
ris-cm          748/tcp    Russell Info Sci Calendar Manager
ris-cm          748/udp    Russell Info Sci Calendar Manager
kerberos-adm    749/tcp    kerberos administration
kerberos-adm    749/udp    kerberos administration
rfile           750/tcp
loadav          750/udp
pump            751/tcp
pump            751/udp
qrh             752/tcp
qrh             752/udp
rrh             753/tcp
rrh             753/udp
tell            754/tcp     send
tell            754/udp     send
nlogin          758/tcp
nlogin          758/udp
con             759/tcp
con             759/udp
ns              760/tcp
ns              760/udp
rxe             761/tcp
rxe             761/udp
quotad          762/tcp
quotad          762/udp
cycleserv       763/tcp
cycleserv       763/udp
omserv          764/tcp
omserv          764/udp
webster         765/tcp
webster         765/udp
phonebook       767/tcp    phone
phonebook       767/udp    phone
vid             769/tcp
vid             769/udp
cadlock         770/tcp
cadlock         770/udp
rtip            771/tcp
rtip            771/udp
cycleserv2      772/tcp
cycleserv2      772/udp
submit          773/tcp
notify          773/udp
rpasswd         774/tcp
acmaint_dbd     774/udp
entomb          775/tcp
acmaint_transd  775/udp
wpages          776/tcp
wpages          776/udp
wpgs            780/tcp
wpgs            780/udp
hp-collector    781/tcp        hp performance data collector
hp-collector    781/udp        hp performance data collector
hp-managed-node 782/tcp        hp performance data managed node
hp-managed-node 782/udp        hp performance data managed node
hp-alarm-mgr    783/tcp        hp performance data alarm manager
hp-alarm-mgr    783/udp        hp performance data alarm manager
mdbs_daemon     800/tcp
mdbs_daemon     800/udp
device          801/tcp
device          801/udp
xtreelic        996/tcp        XTREE License Server
xtreelic        996/udp        XTREE License Server
maitrd          997/tcp
maitrd          997/udp
busboy          998/tcp
puparp          998/udp
garcon          999/tcp
applix          999/udp        Applix ac
puprouter       999/tcp
puprouter       999/udp
cadlock         1000/tcp
ock             1000/udp
blackjack       1025/tcp   network blackjack
blackjack       1025/udp   network blackjack
hermes          1248/tcp
hermes          1248/udp
bbn-mmc         1347/tcp   multi media conferencing
bbn-mmc         1347/udp   multi media conferencing
bbn-mmx         1348/tcp   multi media conferencing
bbn-mmx         1348/udp   multi media conferencing
sbook           1349/tcp   Registration Network Protocol
sbook           1349/udp   Registration Network Protocol
editbench       1350/tcp   Registration Network Protocol
editbench       1350/udp   Registration Network Protocol
equationbuilder 1351/tcp   Digital Tool Works (MIT)
equationbuilder 1351/udp   Digital Tool Works (MIT)
lotusnote       1352/tcp   Lotus Note
lotusnote       1352/udp   Lotus Note
ingreslock      1524/tcp   ingres
ingreslock      1524/udp   ingres
orasrv          1525/tcp   oracle
orasrv          1525/udp   oracle
prospero-np     1525/tcp   prospero non-privileged
prospero-np     1525/udp   prospero non-privileged
tlisrv          1527/tcp   oracle
tlisrv          1527/udp   oracle
coauthor        1529/tcp   oracle
coauthor        1529/udp   oracle
issd            1600/tcp
issd            1600/udp
nkd             1650/tcp
nkd             1650/udp
callbook        2000/tcp
callbook        2000/udp
dc              2001/tcp
wizard          2001/udp    curry
globe           2002/tcp
globe           2002/udp
mailbox         2004/tcp
emce            2004/udp    CCWS mm conf
berknet         2005/tcp
oracle          2005/udp
invokator       2006/tcp
raid-cc         2006/udp    raid
dectalk         2007/tcp
raid-am         2007/udp
conf            2008/tcp
terminaldb      2008/udp
news            2009/tcp
whosockami      2009/udp
search          2010/tcp
pipe_server     2010/udp
raid-cc         2011/tcp    raid
servserv        2011/udp
ttyinfo         2012/tcp
raid-ac         2012/udp
raid-am         2013/tcp
raid-cd         2013/udp
troff           2014/tcp
raid-sf         2014/udp
cypress         2015/tcp
raid-cs         2015/udp
bootserver      2016/tcp
bootserver      2016/udp
cypress-stat    2017/tcp
bootclient      2017/udp
terminaldb      2018/tcp
rellpack        2018/udp
whosockami      2019/tcp
about           2019/udp
xinupageserver  2020/tcp
xinupageserver  2020/udp
servexec        2021/tcp
xinuexpansion1  2021/udp
down            2022/tcp
xinuexpansion2  2022/udp
xinuexpansion3  2023/tcp
xinuexpansion3  2023/udp
xinuexpansion4  2024/tcp
xinuexpansion4  2024/udp
ellpack         2025/tcp
xribs           2025/udp
scrabble        2026/tcp
scrabble        2026/udp
shadowserver    2027/tcp
shadowserver    2027/udp
submitserver    2028/tcp
submitserver    2028/udp
device2         2030/tcp
device2         2030/udp
blackboard      2032/tcp
blackboard      2032/udp
glogger         2033/tcp
glogger         2033/udp
scoremgr        2034/tcp
scoremgr        2034/udp
imsldoc         2035/tcp
imsldoc         2035/udp
objectmanager   2038/tcp
objectmanager   2038/udp
lam             2040/tcp
lam             2040/udp
interbase       2041/tcp
interbase       2041/udp
isis            2042/tcp
isis            2042/udp
isis-bcast      2043/tcp
isis-bcast      2043/udp
rimsl           2044/tcp
rimsl           2044/udp
cdfunc          2045/tcp
cdfunc          2045/udp
sdfunc          2046/tcp
sdfunc          2046/udp
dls             2047/tcp
dls             2047/udp
dls-monitor     2048/tcp
dls-monitor     2048/udp
shilp           2049/tcp
shilp           2049/udp
www-dev         2784/tcp   world wide web - development
www-dev         2784/udp   world wide web - development
NSWS            3049/tcp
NSWS            3049/ddddp
rfa             4672/tcp   remote file access server
rfa             4672/udp   remote file access server
commplex-main   5000/tcp
commplex-main   5000/udp
commplex-link   5001/tcp
commplex-link   5001/udp
rfe             5002/tcp   radio free ethernet
rfe             5002/udp   radio free ethernet
rmonitor_secure 5145/tcp
rmonitor_secure 5145/udp
padl2sim        5236/tcp
padl2sim        5236/udp
sub-process     6111/tcp   HP SoftBench Sub-Process Control
sub-process     6111/udp   HP SoftBench Sub-Process Control
xdsxdm          6558/udp
xdsxdm          6558/tcp
afs3-fileserver 7000/tcp   file server itself
afs3-fileserver 7000/udp   file server itself
afs3-callback   7001/tcp   callbacks to cache managers
afs3-callback   7001/udp   callbacks to cache managers
afs3-prserver   7002/tcp   users & groups database
afs3-prserver   7002/udp   users & groups database
afs3-vlserver   7003/tcp   volume location database
afs3-vlserver   7003/udp   volume location database
afs3-kaserver   7004/tcp   AFS/Kerberos authentication service
afs3-kaserver   7004/udp   AFS/Kerberos authentication service
afs3-volser     7005/tcp   volume managment server
afs3-volser     7005/udp   volume managment server
afs3-errors     7006/tcp   error interpretation service
afs3-errors     7006/udp   error interpretation service
afs3-bos        7007/tcp   basic overseer process
afs3-bos        7007/udp   basic overseer process
afs3-update     7008/tcp   server-to-server updater
afs3-update     7008/udp   server-to-server updater
afs3-rmtsys     7009/tcp   remote cache manager service
afs3-rmtsys     7009/udp   remote cache manager service
man             9535/tcp
man             9535/udp
isode-dua       17007/tcp
isode-dua       17007/udp


23. What is a trojan/worm/virus/logic bomb?

This FAQ answer is excerpted from: Computer Security Basics by Deborah Russell and G.T. Gengemi Sr.

Trojan

An independent program that appears to perform a useful function but that hides another unauthorized program inside it. When an authorized user performs the apparent function, the trojan horse performs the unauthorized function as well (often usurping the privileges of the user).

Virus

A code fragment (not an independent program) that reproduces by attaching to another program. It may damage data directly, or it may degrade system performance by taking over system resources which are then not available to authorized users.

Worm

An independent program that reproduces by copying itself from one system to another, usually over a network. Like a virus, a worm may damage data directly, or it may degrade system performance by tying up system resources and even shutting down a network.

Logic Bomb

A method for releasing a system attack of some kind. It is triggered when a particular condition (e.g., a certain date or system operation) occurs.


24. How can I protect myself from virii and such?

Always write protect your floppy disks when you are not purposefully writing to them.

Use ATTRIB to make all of your EXE and COM files read only. This will protect you from many poorly written viruses.

Scan any software that you receive with a recent copy of a good virus scanner. The best virus scanner currently available for DOS is F-Prot by Fridrik Skulason. The current version is 2.15. It is best to use more than one virus scanner. That will decrease your chances of missing a virus.

Backup regularly, and keep several generations of backups on hand. If you always backup over your last backup, you may find yourself with an infected backup tape.


25. What is Cryptoxxxxxxx?

This FAQ answer is excerpted from: Computer Security Basics by Deborah Russell and G.T. Gengemi Sr.

A message is called either plaintext or cleartext. The process of disguising a message in such a way as to hide its substance is called encryption. An encrypted message is called ciphertext. The process of turning ciphertext back into plaintext is called decryption.

The art and science of keeping messages secure is called cryptography, and it is practiced by cryptographers. Cryptanalysts are practitioners of cryptanalysis, the art and science of breaking ciphertext, i.e. seeing through the disguise. The branch of mathematics embodying both cryptography and cryptanalysis is called cryptology, and it's practitioners are called cryptologists.


26. What is PGP?

This FAQ answer is excerpted from: PGP(tm) User's Guide Volume I: Essential Topics by Philip Zimmermann

PGP(tm) uses public-key encryption to protect E-mail and data files. Communicate securely with people you've never met, with no secure channels needed for prior exchange of keys. PGP is well featured and fast, with sophisticated key management, digital signatures, data compression, and good ergonomic design.

Pretty Good(tm) Privacy (PGP), from Phil's Pretty Good Software, is a high security cryptographic software application for MS-DOS, Unix, VAX/VMS, and other computers. PGP allows people to exchange files or messages with privacy, authentication, and convenience. Privacy means that only those intended to receive a message can read it. Authentication means that messages that appear to be from a particular person can only have originated from that person. Convenience means that privacy and authentication are provided without the hassles of managing keys associated with conventional cryptographic software. No secure channels are needed to exchange keys between users, which makes PGP much easier to use. This is because PGP is based on a powerful new technology called "public key" cryptography.

PGP combines the convenience of the Rivest-Shamir-Adleman (RSA) public key cryptosystem with the speed of conventional cryptography, message digests for digital signatures, data compression before encryption, good ergonomic design, and sophisticated key management. And PGP performs the public-key functions faster than most other software implementations. PGP is public key cryptography for the masses.


27. What is Tempest?

Tempest stands for Transient Electromagnetic Pulse Surveillance Technology.

Computers and other electronic equipment release interference to their surrounding environment. You may observe this by placing two video monitors close together. The pictures will behave erratically until you space them apart.

Although most of the time these emissions are simply annoyances, they can sometimes be very helpful. Suppose we wanted to see what project a target was working on. We could sit in a van outside her office and use sensitive electronic equipment to attempt to pick up and decipher the emanations from her video monitor.

Our competitor, however, could shield the emanations from her equipment or use equipment without strong emanations.

Tempest is the US Government program for evaluation and endorsement of electronic equipment that is safe from eavesdropping.


28. What is an anonymous remailer?

An anonymous remailer is a system on the Internet that allows you to send e-mail anonymously or post messages to Usenet anonymously.

You apply for an anonymous ID at the remailer site. Then, when you send a message to the remailer, it sends it out from your anonymous ID at the remailer. No one reading the post will know your real account name or host name. If someone sends a message to your anonymous ID, it will be forwarded to your real account by the remailer.


29. What are the addresses of some anonymous remailers?

The most popular and stable anonymous remailer is anon.penet.fi, operated by Johan Helsingus. To obtain an anonymous ID, mail ping@anon.penet.fi. For assistance is obtaining an anonymous account at penet, mail help@anon.penet.fi.

To see a list on anonymous remailers, finger remailer-list@kiwi.cs.berkeley.edu.


30. How do I defeat Copy Protection?

There are two common methods of defeating copy protection. The first is to use a program that removes copy protection. Popular programs that do this are CopyIIPC from Central Point Software and CopyWrite from Quaid Software. The second method involves patching the copy protected program. For popular software, you may be able to locate a ready made patch. You can them apply the patch using any hex editor, such as debug or the Peter Norton's DiskEdit. If you cannot, you must patch the software yourself.

Writing a patch requires a debugger, such as Soft-Ice or Sourcer. It also requires some knowledge of assembly language. Load the protected program under the debugger and watch for it to check the protection mechanism. When it does, change that portion of the code. The code can be changed from JE (Jump on Equal) or JNE (Jump On Not Equal) to JMP (Jump Unconditionally). Or the code may simply be replaced with NOP (No Operation) instructions.


31. What is 127.0.0.1?

127.0.0.1 is a loopback network connection. If you telnet, ftp, etc... to it you are connected to your own machine.