http://www.shrubbery.net/rancid/ RANCID monitors a router’s (or more generally a device’s) configuration, including software and hardware (cards, serial numbers, etc) and uses CVS (Concurrent Version System) or Subversion to maintain history of changes.
http://backuppc.sourceforge.net/info.html#screenShots open source simple backup system, supports linux and windows
http://www.fsckin.com/2007/11/14/7-different-linuxbsd-firewalls-reviewed/ (somewhat lame review, but it is useful nevertheless)
http://highscalability.com/joost-network-architecture http://www.royans.net/files/MacCarthaigh-Joost.pdf – PDF slides
http://www.netxms.org/screenshots/ Cool monitoring system with web/ windows management console / pocket pc access
http://munin.projects.linpro.no/ nterface. Its emphasis is on plug and play capabilities. After completing a installation a high number of monitoring plugins will be playing with no more effort.
http://forum.ixbt.com/topic.cgi?id=14:45027-2 (In russian) 1st post on the topic contains interesting info about load in ISP-level networks
http://dynagen.org/tutorial.htm Dynamips is a Cisco router emulator written by Christophe Fillot. It emulates 1700, 2600, 3600, 3700, and 7200 hardware platforms, and runs standard IOS images. In Chris’ own words:
http://lists.us.dell.com/pipermail/linux-poweredge/2005-April/020095.html notes about dell switch hardware and linux ethernet bonding
http://enterprisenetworksandservers.com/monthly/art.php?2715 article explaning Cisco PIX packet flow. Pls read it if u are planning to touch pix config files