Can anyone tell me what the good iptables settings are to make OpenSBC work behind NAT (iptables)
At the moment i have set it like this (see further).
I can register .... but i don't hear a thing not from inside and not from outside the router.
#PREROUTING
# SIP (5060) NAT-STUN (3478)
$IPT -t nat -A PREROUTING -p tcp -i $INET_IFACE -d $INET_IP --dport 5060 -j DNAT --to-destination $SIP_SRV_LAN_IP:5060
$IPT -t nat -A PREROUTING -p udp -i $INET_IFACE -d $INET_IP --dport 5060 -j DNAT --to-destination $SIP_SRV_LAN_IP:5060
$IPT -t nat -A PREROUTING -p udp -i $INET_IFACE -d $INET_IP --dport 30000:35000 -j DNAT --to-destination $SIP_SRV_LAN_IP
$IPT -t nat -A PREROUTING -p udp -i $INET_IFACE -d $INET_IP --dport 3478 -j DNAT --to-destination $SIP_SRV_LAN_IP:3478
#FORWARD
# VOIP
$IPT -A FORWARD -p tcp -d $SIP_SRV_LAN_IP --dport 5060 -j ACCEPT
$IPT -A FORWARD -p udp -d $SIP_SRV_LAN_IP --dport 5060 -j ACCEPT
$IPT -A FORWARD -p udp -d $SIP_SRV_LAN_IP --dport 30000:35000 -j ACCEPT
$IPT -A FORWARD -p tcp -s $SIP_SRV_LAN_IP --sport 5060 -j ACCEPT
$IPT -A FORWARD -p udp -s $SIP_SRV_LAN_IP --sport 5060 -j ACCEPT
$IPT -A FORWARD -p udp -s $SIP_SRV_LAN_IP --sport 30000:35000 -j ACCEPT
#POSTROUTING
# VOIP
$IPT -t nat -A POSTROUTING -o $LAN_IFACE -j SNAT --to-source $INET_IP
$IPT -t nat -A POSTROUTING -o $INET_IFACE -s $SIP_SRV_LAN_IP -j MASQUERADE
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