Acl

2014.10.15 Routing 4 min read

Before we get into the how, let’s talk about the why.

2013.08.19 Switching 1 min read

Quite a while ago I had a need for some network duct tape… Policy Based Routing while useful should only IMHO be used as a temporary fix.

2011.04.25 Security 2 min read

Ever since Cisco released IOS 12.0.1T we’ve had the ability to broaden the reach of the extended ACL to allow the influence of time.

2010.05.19 Switching 5 min read

Unlike subnet masks, wildcard masks allow you to use discontiguous bits which enable you to match on a range of values.

2009.11.23 Security 4 min read

This is one of those tricks you wish you learned about 10 years ago, but never did. You know how easy it is to mess up a nice looking access list.