[SR-Users] media between 2 clients behind separate NAT

Vassilis Radis radisb at gmail.com
Fri Oct 25 14:19:15 CEST 2013


Hello,
When I have 2 clients using a kamailio proxy, and both of the clients are
behind their own NAT, then my only options for relaying media between them
is using some kind of intermediate rtp proxy or STUN etc?
Proxy is on a public IP and essentially I am asking if I can avoid setting
up stuff to proxy the media or mess with STUN, by using some kind of
request response mangling. i.e. have both clients's sdp address/port
changed to their public facing ip/port and then each client can send an
initial packet to the other end. Those initial packets will be blocked by
the other receiver router, but they will open a nat hole so that next
package from the peer will pass through. Is that feasible?

Thanks.
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