[reSIProcate] how to drop incoming packets at the socket (transport) layer

[Jason Fischl]

>
> 1) This is directly related to security, which will be an increasingly
> important issue in the SIP space.

I think the IETF approach to this problem is to use the sip-identity
mechanism specified in
http://www.softarmor.com/wgdb/docs/draft-ietf-sip-identity-05.txt.