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sipnat will try to guess the public and private address
on its own. The public address is polled automatically
if it has not been entered manually. This is useful be-
cause some DSL internet provider change the public IP
address on a periodical basis.
Automatic Start
If you want the gateway to be stated automatically
after a reboot, you need to set up some files as root.
We describe here the procedure for SuSe Linux.
1. Copy or link the proxy in the binary to
/usr/sbin/sip-natgw
2. Copy or link the startup script sip-natgw.sh to
/etc/init.d/sip-natgw
3. Link
/etc/init.d/rc[23].d/[SK]20sip-natgw (in total
4 links).
4. Link /usr/sbin/rcsip-natgw to /etc/init.d/sip-
natgw
5. Set up the variable START_SIP_NATGW to
"yes" in the /etc/rc.config
6. Set the necessary options that you would use
in manual startup in the SIP_NATGW_OPTS
variable.
You can then try start the gateway with the command
"rcsip-natgw start". Check with the ps command if you
can see the process. Reboot the system and check if
after the reboot the sip NAT gateway was started
automatically.
Proxy Chain
When a phone want to initiate a phone call to a desti-
nation that is outside the NAT, sipnat needs to be in
the proxy chain. This can be achieved in different
ways: By using an outbound proxy and by using the IP
gateway.
the
startup
10
script
to
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