Linux Home  networking
http://www.linuxhomenetworking.com/

old link
http://www.siliconvalleyccie.com/

Linux learning and HOW to
http://www.siliconvalleyccie.com/#Linux%20Main

Linux Quick Fix: 
Part I
http://www.linuxhomenetworking.com/#Linux

Part II
http://www.linuxhomenetworking.com/#Websites

Part III
http://www.linuxhomenetworking.com/#Beyond

Quick Fix Linux Fourm
http://www.linuxhomenetworking.com/forums/

Cisco Syslog Configurations
http://www.siliconvalleyccie.com/cisco-hn/syslog-cisco.htm

Cisco configs
Configuring Cisco PIX Firewalls
Configuring Cisco DSL Routers
Cisco SOHO VPNs
http://www.linuxhomenetworking.com/#Cisco