Articles tagged with denial of service

1. IP Cache Flow - Find Abusive Hosts

   Posted on April 12, 2011 in Networking

   If you're on a router that does a lot of traffic, finding the source (or destination) of abusive hosts can be problematic. The output from show ip cache flow can be extremely long and finding anything useful can take a very long time. The following IOS regular expressions (regexes?) can …

2. BIND Users: Update Your Servers

   Posted on July 30, 2009 in Software

   ISC is urging BIND users to upgrade their production DNS servers immediately. ISC recently announced a patch to fix an exploit in BIND. This exploit is in the wild and has been used to crash BIND servers resulting in a denial of service. Using a specially crafted dynamic update packet …