NAT

[6839470]

Hello everyone,
I am trying to configure NAT for my VoIP network. I could get the connectivity to outside network(internet) but not the other way round. I guess I am missing some command while configuring. Can Anyone tell me is there anything like by default something is enabled or I have to enable something.
Need some help

Cheers,
SS

 

[chris13]

Hello,
if you can successfully initiate calls to somebody outside your net, you'll probably need to tell your NAT-box to which server/host/phone it should route incoming connections. Usually this is done by mapping ports on the NAT-box to apropriate ports on your internal boxes.

Example for outside access to an internal web-server and a smtp-server:

Port on
NAT-box map to internal servers/ports
80 -> 10.0.0.1:80
25 -> 10.0.0.2:25

Should be the same with VoIP, but I don't have experiance. The ports and internal destinations will depend on which protocol you use (H323, SIP), the use of Gatekeepers, SIP-Servers and so on...