Netz

http://www.delegate.org/delegate/ => DeleGate is a multi-purpose application level gateway, or a proxy server which runs on multiple platforms (Unix, Windows and OS/2).
http://www.gedanken.demon.co.uk/wwwoffle/ => The WWWOFFLE Homepage
http://www.gedanken.demon.co.uk/wwwoffle/version-2.6/win32.html => The WWWOFFLE Version 2.6 Win32 Page
http://www.lrz-muenchen.de/services/netzdienste/www/www-security/www-security.html => LRZ: Sicherheit und Anonymität im WWW
http://www.interlog.com/~tcharron/wgetwin.html => WGET for Windows
http://news.cis.dfn.de => News Server

Firewall
http://www.smoothwall.org => SmoothWall / Linux
http://www.astaro.de/ => Astaro Security Linux