Buku Keamanan Jaringan Komputer
Hacking Step
Tripwire
Mail Security / PGP
HTTPS/SSL (rev)
GPG (PGP)/with Roundcube
Amavis + Spamassassin + Clamav
Amavis (prakt)
Web/Proxy Auth
Captive Squid
Snort (Prakt)
PPTP
OpenVPN (Rev)
Shorewall
DomainKeys
NSM
Fail2ban & OTP
WS & ClamAV
Screw