Several weeks ago I wrote an introduction on effective security troubleshooting. As promised, this post supplements what I wrote before by focusing primarily on the cross-platform differences and similarities in the debug command implementation. My next posts will target specific areas of security troubleshooting such as general connectivity, VPNs, and authentication issues.

When the hostname.domainname associated with my Small Office Home Office (SOHO) failed to update after a power outage, and a new DHCP-assigned external address was assigned to my router, I was reminded of the need for Dynamic DNS. This article will explore the implementation of the dynamic domain name server system on both the Cisco […]