Tweaktown posted a review on the TRENDnet TK-IP101 KVM IP Switch with TK-423K KVM
Normally we would not cover something like the TK-IP101; it is more of an enterprise class product. However, I recently ran into a situation where I needed to run a reinstall of a system and was not able to be directly in front of it for the duration of the install. Remote desktop would not work as there was no OS; I could not run a monitor and keyboard out to where I was, so in the end I had to run back and forth between locations which caused both projects to take much longer than needed. I started looking for a solution. I found it in the TRENDNet TK-IP101 IP KVM.TRENDnet TK-IP101 KVM IP Switch with TK-423K KVM Review
The TK-IP101 is an IP accessible KVM that serves multiple functions; it allows for console access to any system connected directly to it and can also connect to standard KVMs to allow it to control multiple systems. Access is secured by SSL certificates (including the ability to import Certificates from outside) and user authentication.