Here you'ill find some (hopefully) interesting linux-projects:

Dual-Samba-HOWTO (HEAD/TNG)	Last Update: 23.03.2001
Tunneling Samba with FreeSWAN (IPSEC)	soon...
Samba 2Cents (Tips & Tricks)	soon...
Cyrus-IMAP,Postfix,Procmail	soon...
High-Performance Web-Caching with Squid	soon...
Statefull Firewalling with IPTABLES	soon...