April 29, 2012

The so-called Skype SDK IP leaks

For the last few days, there has been a buzzing news in the community, following the recent discovery of a so-called information leak in the skype SDK. [email protected], published a python code sample “exploiting this vulnerability” https://github.com/zhovner/Skype-iplookup/ using a de-obfuscated SDK and published a demo site @http://skype-ip-finder.tk/. More related information on the skype-open-source project can be found @ http://skype-open-source.blogspot.de/ So to sump-up, the “so-called leak” takes place by: 1. having “debug logging enabled” in the hi-jacked SDK 2. ... Read more

October 1, 2009

OSPF BDR DR election process

This post assumes that you have a basic understanding of OSPF… if not, I suggest jumping over http://en.wikipedia.org/wiki/OSPF for a first quick read. However for the sake of this post, I will go over some basic reminders. The “hello” packet The OSPF routers sends a periodic packet referred to as the hello packet ‘multicast 224.0.0.5’ which is composed of the OSPF header + different fields ID necessary for routers to neighbor and become adjacent. ... Read more