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December 2006

Configuring a Cisco Router to Accept VPN Connections

Thu, 2006-12-14 18:16

This blog has been a long-time-coming as someone asked me quite some time ago to post the simplest way to accomplish this (for a home environment). I hate to admit this, but my home PC (where I get all my email) was hacked since I allowed Microsoft's Remote Desktop Protocol (RDP) and VNC from anywhere on the Internet (very bad idea). That was the end of that - now VPN connections are required to get to my home PC. Well, the simplest way to configure a VPN on a router is to use the Cisco SDM...but Real Cisco Techs™ use the command line :). So here we go:
VPN.jpg

Configuration Change Tracking...Built in?!?

Sun, 2006-12-24 14:31

For years, I have been relying on outside tools to tack changes in running configurations on Cisco devices. One of my favorite (cheaper) tools has been Kiwi CatTools. However, recently, someone turned me on to the fact that this functionality is BUILT-IN to the Cisco IOS! Here's the basics:
The feature is called Configuraton Change Notification and Logging. It has been available since IOS 12.3(4)T/12.2(25)S (it has really gone mainstream in 12.4).
For each configuration command that is executed, the following information will be logged:
• The command that was executed
• The configuration mode in which the command was executed
• The name of the user that executed the command
• The time at which the command was executed
• A configuration change sequence number
• Parser return codes for the command



Dr. Radut