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Index: X

x flag

sendmail, 14.2.1. The Full-Name: Header
sendmail, 30.8. Alphabetized F= Flags

X flag : sendmail, 30.8. Alphabetized F= Flags

$x macro : sendmail, 31.10. Alphabetized Reference

$X macro : sendmail, 31.10. Alphabetized Reference

x option : (see QueueLA (x) option)

X option : (see RefuseLA (X) option)

-x switch (sendmail) : sendmail, 36.7. Alphabetized Reference

-X switch (sendmail)

sendmail, 26.4. Log Transactions with -X
sendmail, 36.7. Alphabetized Reference

X Window System

Practical UNIX & Internet Security, 12.3.4.4. X terminals
Practical UNIX & Internet Security, 17.3.21. The X Window System
Practical UNIX & Internet Security, 17.3.21.5. Denial of service attacks under X
mail queue listing : sendmail, 23.4. Printing the Queue
screen savers : Practical UNIX & Internet Security, 12.3.5.2. X screen savers

"X-Authentication-Warning:" header line

sendmail, 14.6. Trusted User
sendmail, 22.8.1.1. Declare trusted users (not V8.1 through V8.6)
sendmail, 35.10. Alphabetized Reference

x-gw proxy : Building Internet Firewalls, 7.7.4. Other TIS FWTK

X-rated material : Practical UNIX & Internet Security, 26.4.5. Pornography and Indecent Material

x-token encoding type : TCP/IP Network Administration, 3.4.3. Multipurpose Internet Mail Extensions

X.121 addresses : DNS & BIND, 15.7.3. X25, ISDN, and RT

X.25 networks : TCP/IP Network Administration, 1.5.1.3. Fragmenting datagrams

X.400

DNS & BIND, A.1.4.1. PX pointer to X.400/RFC 822 mapping information
sendmail, 25.5.6. X.400 Addresses
sendmail, 31.10. Alphabetized Reference
TCP/IP Network Administration, 3.4.1. Simple Mail Transfer Protocol

X.500 directory service

Practical UNIX & Internet Security, 16.4.4. OSI
DNS & BIND, 15.8. DNS Versus X.500

X/Open Consortium : Practical UNIX & Internet Security, 1.3. History of UNIX

X0.hosts file : DNS & BIND, 6.3.3. Updating .rhosts, hosts.equiv, etc.

X11 window system : Building Internet Firewalls, 2.13. Window Systems

configuring : Building Internet Firewalls, 8.16. X11 Window System

X25 records

DNS & BIND, 15.7.3. X25, ISDN, and RT
DNS & BIND, A.1.3.5. X25 X.25 address - experimental

"X400-Received:" header line : sendmail, 35.10. Alphabetized Reference

xargs command

Practical UNIX & Internet Security, 5.2.5.1. AIX Access Control Lists
Practical UNIX & Internet Security, 11.5.1.4. Filename attacks

Xauthority facility, magic cookies : Practical UNIX & Internet Security, 17.3.21.4. Using Xauthority magic cookies

XDEBUG macro : sendmail, 18.8. Alphabetized Reference

xdelay= equate (syslog output) : sendmail, 26.1.3.13. xdelay= transaction

xdm system : Practical UNIX & Internet Security, 17.3.21.4. Using Xauthority magic cookies

XDR (external data representation)

Practical UNIX & Internet Security, 19.2. Sun's Remote Procedure Call (RPC)
TCP/IP Network Administration, 1.2. A Data Communications Model

Xerox Network Systems (XNS) : Practical UNIX & Internet Security, 16.4.5. XNS

xf file : sendmail, 23.2.7. The Transcript File: xf

xfer-in data category (logging) : DNS & BIND, 7.5.3. Category Details

xfer-out data category (logging) : DNS & BIND, 7.5.3. Category Details

xferlog file : Practical UNIX & Internet Security, 10.3.3. xferlog Log File

xfrnets directive

DNS & BIND, 10.11.3. Preventing Unauthorized Zone Transfers
DNS & BIND, F.1.12. xfrnets (4.9.3)
Practical UNIX & Internet Security, 17.3.6.1. DNS zone transfers

xhost command

Building Internet Firewalls, 8.16. X11 Window System
Practical UNIX & Internet Security, 17.3.21.3. The xhost facility

xinetd software : TCP/IP Network Administration, 12.5. Access Control

XOR (exclusive OR) : Practical UNIX & Internet Security, 6.4.7. An Unbreakable Encryption Algorithm

XScreensaver program : Practical UNIX & Internet Security, 12.3.5.2. X screen savers

XSTATS messages : DNS & BIND, 7.6.1. Common Syslog Messages

XTACACS : (see TACACS)

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