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LDP/howto/linuxdoc/Security-HOWTO.sgml
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@ -2,7 +2,7 @@
<ARTICLE>
<TITLE>Linux Security HOWTO
<AUTHOR>Kevin Fenzi, <tt>kevin-securityhowto@tummy.com</tt> &ero Dave Wreski, <tt>dave@linuxsecurity.com</tt>
<DATE>v1.3, 8 February 2002
<DATE>v1.3.1, 11 February 2002
<ABSTRACT>
This document is a general overview of security issues that face the
administrator of Linux systems. It covers general security philosophy
@ -2057,7 +2057,7 @@ a DNS entry. Many services can be configured to not accept
connections from hosts that do not have valid DNS entries.
<P>
<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
<SECT1> <tt>identd</tt>
<SECT1> identd
<P>
<tt>identd</tt> is a small program that typically runs out of your
<tt>inetd</tt> server. It keeps track of what user is running what TCP
@ -2087,6 +2087,7 @@ return a uid instead of a user name or even NO-USER.
<P>
<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
<SECT1> Configuring and Securing the Postfix MTA
<P>
The Postfix mail server was written by Wietse Venema, author of
Postfix and several other staple Internet security products, as an "attempt to
@ -2159,7 +2160,7 @@ System), which can detect other network intrusions. <htmlurl url="http://www.sno
name="http://www.snort.org">
<P>
<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
<SECT1> <tt>sendmail</tt>, <tt>qmail</tt> and MTA's
<SECT1> sendmail, qmail and MTA's
<P>
One of the most important services you can provide is a mail
server. Unfortunately, it is also one of the most vulnerable to attack,
@ -2407,6 +2408,7 @@ name="http://www.adelaide.net.au/~rustcorp/ipfwchains/ipfwchains.html">
<P>
<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
<SECT1> Netfilter - Linux Kernel 2.4.x Firewalling
<P>
In yet another set of advancements to the kernel IP packet filtering code,
netfilter allows users to set up, maintain, and inspect the packet filtering
rules in the new 2.4 kernel. <P>
@ -3364,3 +3366,4 @@ name="tufank@metu.edu.tr">
</tscreen>
<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
</article>