My server NAT's an internal asterisk VOIP server. That works, but we're
trying to use a separate dsl connection for VOIP.
eth0 : internal LAN
eth1 : default internet
eth3 : VOIP connection ( DHCP)
The VOIP traffic is SIP and IAX, but for now I'm just trying to set up
IAX, which uses port 4569 for all traffic.
I've manually edited /etc/iproute2/rt_tables:
cat rt_tables
#
# reserved values
#
255 local
254 main
253 default
0 unspec
#
# local
#
#1 inr.ruhep
180 voip
and created this script:
# manually set up table 180 in /etc/iproute2/rt_tables
# for any iax packets that come in set fwmark to 180
/sbin/iptables -t mangle -A PREROUTING -s 10.10.10.180 -p udp --dport
4569 -j MARK --set-mark 180
# any packets with fwmark 180 are routed through table 180
/sbin/ip rule add fwmark 180 table 180
# this should send out the voip packets over eth3
/sbin/ip route add dev eth3 table 180
Will this mess up the NAT? Anything else to look out for?
sean
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