BGP has issues; the main one being transitive trust. BGP works by having networks (companies, providers, etc.) advertise routes that it owns to its peers. These peers pass those routes on to their peers, ad nauseum, until everyone knows what networks everyone has. The big assumption here is that you are advertising only networks...
Monthly Archives: February 2008
Can’t Login to Your ASA via SSH or Telnet?
I deployed a Cisco ASA at a location and couldn’t get logged in via SSH. I would get prompted, but, no matter what username/password I put in, it would just reject me. After some digging, it turns out that I forgot this command. aaa authentication ssh console LOCAL When I put this in, it...
Remembering the Little Things
Back in the day, when I used to put a new piece of IOS-based gear on the network, I would have to go through the gear already in production to remember what all those “little configurations” were that kept the devices running. Guess how many times I remembered to set the NTP server or...
The Cisco Network Hierarchical Model
I got my CCNP certification library the other day to finally get myself another cert, so I’ve been doing some reading of late. The thing I hate about certs is that, even if you have all the experience in the world, there’s always a whole mess of academic stuff that no one really knows...
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