Solution for NAT

[johnnylq]

Hello..
I'm again; well I'd like to know if you know about the port generation in the VOD environment; well the main problem is that the VOD don't works in clients behind a NAT; I was testing my NAT(overloading NAT) and I found an interesting solution for this problem...; but I need to have control over the destination and source ports generations in the VOD environment for video and audio streaming; and of course over the SDP file generations.....Can you help me??
do you know in which files are the code to do this????
I was reading the rtsp.c, rtp.c and the vlc_vod.h but dont find anything about it..

Thanks in advance