[asterisk-users] sip_nat.conf - Asterisk with two Ethernet Interfaces

[Anjul Srivastava]

Will this do the intended thing?

This is in sip_nat.conf which is included in sip.conf:


externip=192.168.0.200
localnet=192.168.0.200/255.255.255.0
externip=64.168.237.110
localnet=192.168.1.2/255.255.255.0

I have Asterisk running on a box with two Ethernet interfaces and bound to
both.  One interface, 192.168.1.2 services clients outside the firewall
who are led to believe that Asterisk is running at 64.168.237.110.  The
other interface, 192.168.0.200 services clients inside the firewall who
are led to believe that Asterisk is running at 192.168.0.200.

I am worried that Asterisk might not do what I am intending to do.   What
I want is for Asterisk to send SIP/SDP Connection Info as 64.168.237.110
to those clients that contact it on 192.168.1.2, and to send SIP/SDP
Connection Info as 64.168.237.110 to those that contact it on
192.168.0.200.

I am worried that it might use the last externip=... declaration for both
interfaces and ignore the other one.

Could somebody help me with determining the treatment of the multiple
externip=... declarations?  Or point me to how I could verify?

I don't want to wait until the evening to find out from outside the
firewall that this doesn't work.  (It is working fine from within the
firewall where I contact asterisk at 192.168.0.200)

Thank you!

Best regards,
Anjul.