HowTo configure iptables - SIPfoundry sipx, The Open Source SIP PBX for Linux - Calivia

HowTo configure iptables - SIPfoundry sipx, The Open Source SIP PBX for Linux - Calivia: "Using SIP conntrack/NAT

Load the modules

modprobe ip_conntrack_sip ip_nat_sip

Set IPtables filter rules

iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A INPUT -p udp --dport 5060 -j ACCEPT

Set IPtables NAT rules

iptables -A FORWARD -o eth0 -p udp --dport 5060 -j ACCEPT
iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to-source ip.add.dr.ess

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