Has anyone had success in forcing a Sonicwall router to leave outbound RTP packets alone? We have a situation where a TZ210 is "translating" the source port number (which causes no outbound audio at the SIP trunk provider) on some of the conversations, but it usually only affects the first couple packets.
We have a NAT rule built as follows:
Original Source IP: 192.168.5.10
Translated Source IP:
Original Destination: ANY
Translated Destination: ORIGINAL
Original Services: ANY
Translated Services: ORIGINAL
Inbound Interface : LAN
Outbound Interface : WAN
The router simply doesn't seem to obey this rule all the time...