pfsense and VoIP Much

VoIP Much > Technical Information

pfsense does work with VoIP Much, and we have a customers using this router.
However, due to the complexity of pfsense, this is not a router we support.

If SIP (VoIP) through pfsense is not working, try the following:
  • Disable source port rewriting
  • Set Conservative state table optimization
We have found that adding port forwarding in pfsense, has no effect on SIP (VoIP).


If still not working, try also:
  • Use the siproxd package
  • Disable scrubbing (under System > Advanced).  This is rarely required.


NOTE:  pfsense by default only allows one sip registration to be active at a time on a protected LAN. The siproxd extension allows multiple phones to coexist happily, but it is a little confusing to set up.
If you need more than one SIP connection, and more than one is not working, try:
  • Firewall: Rules: WAN = none for SIP or RTP
  • Firewall: NAT: Port Forward = none
  • Firewall: NAT: Outbound = Manual Outbound NAT, using default rule with NO Static Port mapping
  • Reboot the pfsense machine

Article ID: 97, , Modified: 5/28/2020 at 4:06 PM

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