Patent ID: 8302186

Claim:
A computer-implemented method comprising: measuring, by a processor, a first performance, associated with non-attack traffic without attack traffic, of a Session Initiation Protocol (SIP)-based protection device implementing authentication of SIP request messages; measuring, by the processor, a second performance, associated with non-attack traffic and attack traffic, of the SIP-based protection device implementing authentication of SIP request messages without implementing return routability filtering of SIP request messages; and measuring, by the processor, a third performance, associated with non-attack traffic and attack traffic, of the SIP-based protection device implementing authentication of SIP request messages and return routability filtering of SIP request messages, wherein implementing the authentication of SIP request messages includes determining that SIP request messages do not include spoofed source addresses, and wherein implementing the return routability filtering of SIP request messages includes blocking unauthenticated SIP request messages from a source address.