Best-Practices
Design & Architecture
Network Design — Keeping it simple
Since the dawn of time people have skirted best practice and banged together networks, putting the proverbial square peg in the esoteric round hole.
Security
Best Practices and Securing Cisco IOS
Everyone has different views on hardening IOS, and while I do not claim to be an expert, these are the practices that I commonly use when bringing up a new device.
Routing
BGP Security Tips (updated)
For some, BGP is a rather large obtrusive beast of a protocol that scares them half to death.