[Serusers] Proxy sending ACK on port 5060 instead of on contact port

[mahesh]

Zeus,
If you observe the fw2 capture, you see that ACK sent from the proxy is 
sent to port 5060 on host2, instead of to the contact port.(packet No:9).

The fw has a test version of our own implementation of the ALG. By the way 
what do you mean by different CONTACT header??

Mahesh


>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 at intoto.com]
> > Sent: Wednesday, 15 September 2004 7:12 PM
> > To: Zeus Ng
> > Cc: serusers at 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 at lists.iptel.org
> > [mailto:serusers-bounces at lists.iptel.org]
> > > > On Behalf Of mahesh
> > > > Sent: Wednesday, 15 September 2004 5:15 PM
> > > > To: serusers at 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 at lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers
> > > >
> >