I've just recently got this working with asterisk 0.7.1. You also need to add values for: Localnet & localmask to indicate the values that do not get externip set.
However, this did not fully solve the problem for me. External phones would register just fine, but then I kept getting lots of retry failures. It appears that asterisk changes the Call-ID value between what is sent and what is stored internally! Once a phone registers I sip debug shows asterisk sending a NOTIFY message wit a Call-ID value using the externip address, however the 200 OK response back from the phone has a call id with the same random characters but has the localip address instead. I've currently solved this but removing the ip address from build_callid() until I try to see where asterisk gets this wrong. Has anyone else seen this? Having made this fix I now have SIP going NAT - NAT <- asterisk. Kevin > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Patrick Lidstone (Personal E-mail) > Sent: 26 January 2004 18:31 > To: [EMAIL PROTECTED] > Subject: [Asterisk-Users] SIP behind NAT - use of "externip" option > > > I am having difficulty configuring SIP behind NAT (using latest CVS). > > Using sip.conf: > > [general] > port=5060 ; Port to bind to > externip=ww.xx.yy.zz > bindaddr=0.0.0.0 > nat=yes > register=>[userid]:[EMAIL PROTECTED]/2000 > [voiptalk.org] > nat=yes > externip=ww.xx.yy.zz > type=friend > secret=[password] > nat=yes > reinvite=no > canreinvite=no > > I fail to register. SIP Debug gives: > > SIP Debugging Enabled > Jan 26 18:20:04 NOTICE[9226]: chan_sip.c:3126 > sip_reg_timeout: Registration for '[EMAIL PROTECTED]' > timed out, trying again 11 headers, 0 lines Reliably > Transmitting: REGISTER sip:voiptalk.org SIP/2.0 > Via: SIP/2.0/UDP 192.168.0.89:5060;branch=z9hG4bK02c0373f > From: <sip:[EMAIL PROTECTED]>;tag=as5548d275 > To: <sip:[EMAIL PROTECTED]> > Call-ID: [EMAIL PROTECTED] > CSeq: 103 REGISTER > User-Agent: Asterisk PBX > Expires: 120 > Contact: <sip:[EMAIL PROTECTED]> > Event: registration > Content-length: 0 > > (no NAT) to 82.145.32.73:5060 > Retransmitting #1 (no NAT): > REGISTER sip:voiptalk.org SIP/2.0 > Via: SIP/2.0/UDP 192.168.0.89:5060;branch=z9hG4bK02c0373f > From: <sip:[EMAIL PROTECTED]>;tag=as5548d275 > To: <sip:[EMAIL PROTECTED]> > Call-ID: [EMAIL PROTECTED] > CSeq: 103 REGISTER > User-Agent: Asterisk PBX > Expires: 120 > Contact: <sip:[EMAIL PROTECTED]> > Event: registration > Content-length: 0 > > > to 82.145.32.73:5060 > Retransmitting #2 (no NAT): > ... as previous frame ... > > I would expect (perhaps wrongly?) that the externip would be > reflected in the Via: header (it seems to be when I look at > the traces from a SNOM 100 successfully registery with > voiptalk behind the same firewall). And the (no NAT) comments > in the debug trace also look suspicious, given the explicit > nat=yes in the config. > > Any hints? I guess the externip might be in the wrong place > or conflicting with one of my other options, but neither the > docs don't seem to offer much by way of advice (I've checked > the wiki, googled etc). Thanks Patrick > > _______________________________________________ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/aster> isk-users > To > UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users