Just a quick note on Linux firewalls and in this case t.38 aka fax. We had a issue with t.38 working properly on a new install. Everything else was fine. We were seeing a 200 ok message from the ITSP on the phone server just before sending t.38 that was telling the phone server the Owner/Creator was a unknown IP address, meaning the IP address was unknown to both parties. The phone server would then send the t.38 to the unknown address as directed. The ITSP showed the 200 message leaving their system did not have the unknown IP.
It turns out the client's linux firewall/server kernel has sip helpers loaded and kicked in only for the t.38. The following clears up the problem: http://www.shorewall.net/FAQ.htm#faq77 or basically: rmmod nf_nat_sip rmmod nf_conntrack_sip Maybe a nice note for the wiki? -- Regards -------------------------------------- Gerald Drouillard Technology Architect Drouillard& Associates, Inc. http://www.Drouillard.biz _______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users/
