The researcher behind the five critical Cisco flaws, collectively called CDPwn, talks about why Layer 2 protocols are under-researched when it comes to security vulnerabilities. Researchers on ...

Cisco Discovery Protocol (CDP) is a link layer discovery protocol that has been integrated into Cisco switches and routers ever since I can remember. Cisco introduced CDP support into their routers ...

Cisco has released a fix to a flaw in a popular communications protocol that some experts said could take down the Net and has announced a new, unrelated security bug. After the United Kingdom's ...

I'm trying to set up a VPN using Windows 2k server and in order to do it I understand that I need to forward a port #1723 as well as IP Protocol 47 (GRE). <BR><BR>I can forward the port just fine, but ...

The last thing you want is to configure your routing protocol to turn VPLS into a frame-relay style network with all traffic routing through a hub site. VPLS looks like a great technology for a small ...

For the past few weeks attackers have been probing networks for switches that can potentially be hijacked using the Cisco Smart Install (SMI) protocol. Researchers from Cisco’s Talos team have now ...

Cisco has released a fix to a flaw in a popular communications protocol that some experts said could take down the Net and has announced a new, unrelated security bug. After the United Kingdom's ...