Multi-WAN and SIP UDP Session Closure

[mevans336]

Hello Everyone,

I'm using pfSense 1.2.3-RC1 with 2 x DHCP multi-wan connections. Everything is working great, but my SIP session continually times out. I have to force it over OPT1 as my WAN1 provider has a weird SIP proxy in my fiber ONT that breaks SIP. I can establish a connection, but after a short period of time, less than 1 hour, nothing shows in the states table for my SIP phone at all.

Here is what should normally show:

udp  207.x.x.x:5060 <- 192.168.1.245:5060  MULTIPLE:MULTIPLE 
udp 192.168.1.245:5060 -> 75.x.x.x:5060 -> 207.x.x.x:5060 MULTIPLE:MULTIPLE

When my SIP phone stops working, nothing is shown for the phone (192.168.1.245, static) at all. I have a LAN firewall rule that sends everything from 192.168.1.245 out OPT1, although I've tried using the FailOver OPT1toWAN1 pool as well without any different results.

I thought perhaps I should increase the State Timeout in the firewall rule for the LAN VoIP rule, but since it's UDP I don't think session state applies, correct? Here is my LAN Rule:

*  192.168.1.245  *  *  *  OPT1      VoIP

[foxtrop]

Hi, I solved this by increasing the waiting time, registration of the phone was 3600 seconds and the waiting time in the rule that applied was 3700 seconds, and so far I have had more problems.

[mevans336]

@foxtrop:

Hi, I solved this by increasing the waiting time, registration of the phone was 3600 seconds and the waiting time in the rule that applied was 3700 seconds, and so far I have had more problems.

My problem turned out to be some type of SIP proxy my fiber ONT has enabled.