Dan York on Botnets and VoIP

Very interesting piece from Dan about methods of attack on VoIP systems using botnets (he talks specifically about SIP in his example, although the same principles apply to any protocol):-

http://voipsa.org/blog/2007/05/07/ready ... tack-bots/

We've talked a bit here about OSP. Something that VoIP User has been actively working on and looking to test in peering environments. It would prevent a lot of the issues that Dan highlights from ever happening, due to the validation of originating network for each SIP transaction. I'll talk more about this soon - we're just getting together a group of peers to run some tests, and will report on our findings.

Dean