I'm looking for a way to prevent a device from being connected to my network with a static IP address that is the same as other devices that I've already assigned static IP addresses to. For example, I don't want a random user to be able to set their laptop to a static IP of 192.168.1.1 and cause a conflict with a server that has the same IP address. I would like to be able to, at a switching level, disable network access to that user's pc and avoid the conflict. I would like an automated way to do this, if possible. Does anyone know of any solution? Thanks!
I'm not sure what kind of switch you are using, but I assume that it supports 802.1x, which is a Layer 2 based authentication method. This is exactly what you need in your situation, as it will keep any unauthorized pcs off of your network.
Here is a tech note on how to configure it, specifically for a 3750 switch:
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.