In addition to the settings in the default VoIP profile, the strict profile sets all SIP deep message inspection header checking options to discard. This profile is available for users who want to validate SIP messages and to only allow SIP sessions that are compliant with RFC 3261. ips-rtp to enable IPS in security policies that also accept SIP sessions to protect the SIP traffic from SIP-based attacks.contact-fixup perform NAT on the IP addresses and port numbers in SIP head- ers in SIP CONTACT messages even if they don’t match the session’s IP address and port numbers.nat-trace (see NAT with IP address conservation on page 2794). ![]()
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