The Packet University

The Packet University is now providing two RSS feeds.  These feeds can be located on the main front page of the web site in the left column of the site.  The first feed is an RSS feed for Podcatching clients.  ITunes users can also click on the ITunes image to automatically launch the ITunes store with our PacketCast series selected.  All other podcasters can use the RSS feed found directly below the ITunes image.

We will continue to maintain the Blog feed which contains the show notes pages for the PacketCasts as well as anything else we choose to discuss.  

Ten or twelve years ago, a company with a firewall was likely ahead of the curve.   During the early era of the internet, most companies were concerned more with getting connected than the security ramifications of it.  Companies used simple NAT devices or Proxies running sometimes on vulnerable operating systems.  Ironically during this era,  exploitation of vulnerabilities was less widespread and even less publicized. 

We are very excited to inform you that our first PacketCast is going live.  The topic of this discussion is routing loops and the IP Time to Live field.  In this talk we build a lab of three routers and forcefully inject network loops.  We look at different ways to detect routing loops, even in the case that we don’t have access to the network or network equipment in which the packets are looping.