I have got a Netgear DGFV338 ADSL firewall router which is currently running in NAT mode (other option is classical IP) which has been operating fine for a few weeks now with a single IP (18.104.22.168). I have now got some extra static IPs and I have setup some inbound rules so that I can do one-to-one NAT mapping. This has worked ok so all inbound stuff seems to be mapped statically to 22.214.171.124 However, the outbound stuff seems to be getting mixed up with the shared NAT address on 126.96.36.199 When I do a firewall test it is reporting back on both IPs 3 9002 Error (6) An incompatible NAT configuration has been detected. Please check FAQ for further information. addrFromAgent = 188.8.131.52:9002 addrFromSTUN = 184.108.40.206:9002 How can I stop it from reporting on the .41 address ?? The only outbound rule that I have got at the moment is to map STUN 10000 UDP to the external IP 220.127.116.11 I am running 3CX v6.1.0 BTW but I am thinking of upgrading to ver 7.