I have an Asterisk server with 2 network cards. One provides the LAN
connection and the other provides the Internet connection. Currently this is
set up in the following way:
eth0 192.168.1.5. This provides LAN connectivity
eth1 192.168.1.251, gw 192.168.1.252 (Note that other nodes on the network
use a different gateway, not 192.168.1.252). This provides the internet
connection. The router is set up with DMZ enabled and pointing to
192.168.1.251.
Currently, when a SIP device attempts to register across the internet, the
following sip dialogue is observed:
U 60.234.nnn.nnn:5060 -> 192.168.1.251:5060
REGISTER sip:60.234.xxx.xxx SIP/2.0..Via: SIP/2.0/UDP
60.234.nnn.nnn;branch=z9hG4bK9d31000024770000..From: "CallerID"
<sip:[EMAIL PROTECTED]>;tag=bec20000273bffff..To:
<sip:[EMAIL PROTECTED]>..Contact: <sip:[EMAIL PROTECTED]>..Call-ID:
[EMAIL PROTECTED]: 100 REGISTER..Expires: 60..User-Agent:
Grandstream HT488 1.0.2.16..Max-Forwards: 70..Allow:
INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,
OPTIONS,INFO,SUBSCRIBE..Content-Length: 0....
#
U 192.168.1.5:5060 -> 60.234.nnn.nnn:5060
SIP/2.0 100 Trying..Via: SIP/2.0/UDP
60.234.nnn.nnn;branch=z9hG4bK9d31000024770000;received=60.234.nnn.nnn..From:
"CallerID" <sip:[EMAIL PROTECTED]>;tag=bec20000273bffff..To:
<sip:[EMAIL PROTECTED]>..Call-ID: [EMAIL PROTECTED]: 100
REGISTER..User-Agent: Asterisk PBX..Allow: INVITE, ACK, CANCEL, OPTIONS,
BYE, REFER, SUBSCRIBE, NOTIFY..Contact:
<sip:[EMAIL PROTECTED]>..Content-Length: 0....
###
U 192.168.1.5:5060 -> 60.234.nnn.nnn:5060
SIP/2.0 401 Unauthorized..Via: SIP/2.0/UDP
60.234.nnn.nnn;branch=z9hG4bK9d31000024770000;received=60.234.nnn.nnn..From:
"CallerID" <sip:[EMAIL PROTECTED]>;tag=bec20000273bffff..To:
<sip:[EMAIL PROTECTED]>;tag=as23747970..Call-ID:
[EMAIL PROTECTED]
: 100 REGISTER..User-Agent: Asterisk PBX..Allow: INVITE, ACK, CANCEL,
OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY..Contact:
<sip:[EMAIL PROTECTED]>..WWW-Authenticate: Digest realm="asterisk",
nonce="1442f9e8"..Content-Length: 0....
where:
60.234.nnn.nnn is public IP of SIP client
60.234.xxx.xxx is public IP of Asterisk server
Asterisk seems to be replying on eth0 whereas the inbound traffic was
received on eth1.
This leads me to think that there's a better way to configure the network.
If anyone could provide some advice I would appreciate it. If the setup is
reasonable, how do I get Asterisk to reply on eth1?
Thanks in advance
Cameron
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