We would like to use STUN as preferred NAT traversal method but for those situations where STUN does not work we would offer an outbound proxy (configured in user agent). We would like to keep the NAT traversal proxy completely separate from SER. I wonder has anybody implemented this ? how ? and any other suggestions/feedback.
Br /Kevin Brennan.
The basic problem you run into is when you separate the registrar function from the far-end NAT traversal function.
I decided not to pursue the for now but was looking at using the Path header as one possible solution. I guess there are other, simpler solutions, depending on your SER configuration and network architecture.
As far as I can tell, most commercial SBCs are also B2BUAs so they solve the problem in a completely different way.
Mark
On 9/26/05, Kevin Brennan kevin.brennan@redsquared.com wrote:
We would like to use STUN as preferred NAT traversal method but for those situations where STUN does not work we would offer an outbound proxy (configured in user agent). We would like to keep the NAT traversal proxy completely separate from SER. I wonder has anybody implemented this ? how ? and any other suggestions/feedback.
Br /Kevin Brennan.
Serusers mailing list serusers@lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers
Kevin Brennan wrote:
We would like to use STUN as preferred NAT traversal method but for those situations where STUN does not work we would offer an outbound proxy (configured in user agent). We would like to keep the NAT traversal proxy completely separate from SER. I wonder has anybody implemented this ? how ? and any other suggestions/feedback.
I did this once. The idea was to changes the aor (user@domain) to user@domain@outboundproxyIP.
Thus, when forwarding the request to the main proxy, the contact header was replaced with user@domain@outboundproxyIP and the the OBP stores user@domain@outboundproxyIP instead of user@domain in the location table.
It was a really bad hacked done by modifying the save() function and using replace() in ser.cfg heavilly.
I guess it might be easier to implement, maybe without coding by using avpops.
regards klaus
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Kevin Brennan -
Klaus Darilion -
Mark Aiken