Networking
Finding Optimal MTU Size
Start with a high MTU value (say 1500)
ping www.google.com -n 1 -f -l 1500
If the response includes
Packet needs to be fragmented but DF set
then lower the -l value by 10 and re-test. Once you get a reply from your target address, increment the -l value by 1 until you cannot increment -l without receiving the above framentation [...]
Don’t be a Victim of DNS Security Holes
Since DNS cache poisoning attacks are far beyond my normal realm of responsibility, it’s hard for me to really talk about the topic. I did make a post about it on my work blog a few days ago, but only because Microsoft released a patch for Windows DNS servers [MS08-037] and Nortel commented on it’s applicability [...]
Tolly Reports on Nortel
A few cool links regarding Nortel products at the Tolly Group’s website. Tolly has been doing product evaluation and testing for over 20 years (I don’t know the actual length, they don’t say on the website). They are independent and claim to be unbiased. I see their reports being used by a variety of people. [...]
Future landscape of Internet worms
Wired: Gathering ‘Storm’ Superworm Poses Grave Threat to PC Nets, by Bruce Schneier.
Thanks to Digg for finding this.
I’ve read some of Bruce’s work from time to time for over 8 years and have always been impressed with his work in cryptography and security. The interesting points in this article include things like
“Not that we really [...]
