Mahesh, I don't see anything wrong with IPTEL's proxy server. It's behaving well. The ACK is sending to HOST2 via the their proxy. What exactly is your problem? BTW, what kind of SIP-ALG are you using. It's kind of strange that it has a different CONTACT header yet it works. Zeus > -----Original Message----- > From: mahesh [mailto:mahesha@intoto.com] > Sent: Wednesday, 15 September 2004 7:12 PM > To: Zeus Ng > Cc: serusers(a)lists.iptel.org > Subject: RE: [Serusers] Proxy sending ACK on port 5060 > instead of on contact port > > > Hi Zeus, > > I am attaching the ethereal captures of both fw1 and fw2(on > wan interfaces). The NAT IP used by fw1 is 202.125.84.164 and > the one used by fw2 is > 202.125.84.163 > > regards > Mahesh > > > >Mahesh, > > > >Given that you have ethereal capture, send it in to the list > and we can > >see what's happening. > > > >Zeus > > > > > -----Original Message----- > > > From: serusers-bounces(a)lists.iptel.org > [mailto:serusers-bounces@lists.iptel.org] > > > On Behalf Of mahesh > > > Sent: Wednesday, 15 September 2004 5:15 PM > > > To: serusers(a)lists.iptel.org > > > Subject: [Serusers] Proxy sending ACK on port 5060 instead of on > > > contact port > > > > > > > > > Hi all, > > > > > > I am using the following configuration to test SJPhone > through IPTEL > > > proxy server(publicly > > > available:195.37.77.99). > > > > > > HOST1(win2K)---FW1---Internet---FW2---HOST2(winXP) > > > > > > Host1 and Host2 are hosts with private IPs having SJPhone > > > application. FW1 and FW2 are > > > firewall/NAT devices with SIP-ALG implementation. This means > > > all the SIP > > > messages are modified to include the public IPs in them. Also the > > > via,contact ports are modified. Now both host1 and host2 > > > register with the iptel proxy server. A call is initiated > > > from host1. Host2 > > > sends 200 OK response > > > to the HOST1. After this the ACK sent by Host1 is sent to > > > port 5060 on > > > HOst2,instead of the > > > contact port advertised in 200 OK. This is observed from > > > ethereal captures > > > on Host2. All these > > > messages are going through the proxy server(195.37.77.99). > > > > > > Can someone please tell me why the proxy server is behaving this > > > way, i.e. sending ACK on 5060 > > > instead of the contact. Is there anything that i am missing > > > here or doing > > > wrong. > > > > > > Thanks > > > Mahesh > > > > > > _______________________________________________ > > > Serusers mailing list > > > serusers(a)lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers > > > >