visualizing network traffic

Visualizing Network Traffic with Netflow and FlowScan.
http://www.onlamp.com/pub/a/bsd/2005/09/15/Big_Scary_Daemons.html

apache and php

Howto compile PHP and Apache
http://www.web-tech-india.com/articles/php/compiling_php_apache/

unix security checklist

cert unix security check list
http://www.cert.org/tech_tips/usc20_full.html#2.0

linux reference

linux security reference
http://www.linuxquestions.org/questions/showthread.php?s=&threadid=45261

ACID substitute

substitute for Analysis Control for Intrusion Detection. Sguil
http://sguil.sourceforge.net/

mysql server

compiling and optimizing mysql
http://www.databasejournal.com/
http://www.databasejournal.com/features/mysql/article.php/1402311
http://www.databasejournal.com/features/mysql/print.php/3367871

netcat primer

netcat, TCP/IP swiss army knife.
http://www.linux.com/article.pl?sid=05/11/07/182200