[Serusers] SER and NAT

[Klaus Darilion]

You have to rewrite the REGISTER message before saving the locations!

if (nat_uac_test("2")) {
       force_rport();
       fix_nated_contact();  # from nathelper module
       append_hf("P-Behind-NAT: Yes\r\n");
       setflag(5); #natflag
       .....
        .....
       save(location);  # user with natflag set will be
                        # pinged to keep NAT binding alive


regards,
klaus

Tjapko ITS Consult at ncy wrote:
> Hello List,
> 
> In my fierce battle to overcome the NAT problem I have now running SER and
> Mediaproxy without any problem. Whenever any Nated EP like to call to PSTN
> or a non nated EP the call goes ok. Whenever I try to call from a non nated
> EP to a NATed EP the call does not go through.
> 
> It seems like that the destination address is not known by mediaproxy so it
> can't forward the call to the correct EP.
> 
> My question is whether this problem might be caused by my ser.cfg or that
> this is typical SIP behaviour.
> 
> In other words is it possible to call to any EP that is behind Symmetric
> NAT.
> 
> Kindest Regards,
> 
> Tjapko Smits
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