Hi chpalmer,

Thank you very much for the detailed reply, it's much appreciated!

I had seen an older post (I think from you) on the dslreports forum indicating success with pfSense and voipo, so I had hope that this setup was feasible.

Last night while doing some research into this issue I came across some other discussions that the problem is the result of pfSense by default rewriting the source port on all outgoing packets. This is normally considered a "best practice" for security, but sometimes can cause certain applications to work unreliably.

Not sure if this source port rewrite is the cause of my specific problem, but I followed the advice at https://doc.pfsense.org/index.php/Static_Port and created a Advanced Outbound NAT (AON) rule.

Haven't had a chance to fully test this configuration yet, but inbound calls seem to be getting through better now.

I'd like to try your configuration as well, and would very much like to see a few screen shots for reference when you have a chance to collect some.

Again, thank you very much for your help!


-Russ