> Imagine a host behind NAT with IP 192.168.22.33 which has an application > on port 5060 ( a sip client) and opens a connection to a server outside > the NAT (the sip registrar with IP 130.11.22.33 on port 5060), and > consider that the NAT box translates the SIP client src_ip to > 129.11.22.33 and src_prt to 5054, for this communication. > > The SIP registrar is able to reach the SIP client running on > 192.168.22.33:5060 by using 129.11.22.33:5054, but what about other > hosts on the Internet? Will they also be able to reach the SIP client > using the pair 129.11.22.33:5054, They can't > or only packets coming from the SIP registrar be accepted? yes. Sip clients behind NAT must use a Proxy. -- damjan | ÐÐÐÑÐÐ This is my jabber ID --> damjan@xxxxxxxxxxxx <-- not my mail address!!!
