TCP Variables: http://ipsysctl-tutorial.frozentux.net/chunkyhtml/tcpvariables.html
linux 一句话问答: http://my.opera.com/wangzhijun/archive/monthly/?day=20060111
Iptables 指南: http://man.chinaunix.net/network/iptables-tutorial-cn-1.1.19.html
IP, Internet Protocol: http://www.networksorcery.com/enp/protocol/ip.htm#Total%20Length
tomcat性能调整: http://vod.sjtu.edu.cn/help/Article_Show.asp?ArticleID=1387&ArticlePage=1
Quick reference to HTTP headers: http://www.cs.tut.fi/~jkorpela/http.html
PPP HOWTO 中译版: http://www.chinalinuxpub.com/doc/howto/PPP-HOWTO.html
MySQL中文参考手册: http://www.linuxforum.net/books/mysqlmanual/manual_toc.html