hi, For those investigating VoIP attacks and scannings, the Honeynet Project released their VoIP challenge today! It is real attacks and you have to figure out what has happened. It is a good way to learn more about SIP security https://honeynet.org/challenges/2010_4_voip The best answers will win prizes! cheers sjur (and sorry for spamming this mailinglist, but there has been talks about such attacks here... and this can be very helpful!)