[Spce-user] SIP 200 packets rejected on trunk

John Murray john.murray at skyracktelecom.com
Thu Jan 17 07:21:03 EST 2013


Hi,

I've heard this kind of response also from PSTN providers.
It usually goes with 'I've heard that Record-Route headers are a security risk'. Same people who turn off ICMP reply and TTL timeout responses which also MUST be sent.
It's standard FUD from the low end security people who end up breaking things.

I know this doesn't help, but you're not alone :-)

Regards

John

-----Original Message-----
From: spce-user-bounces at lists.sipwise.com [mailto:spce-user-bounces at lists.sipwise.com] On Behalf Of Jon Bonilla (Manwe)
Sent: 17 January 2013 11:14
To: spce-user at lists.sipwise.com
Subject: Re: [Spce-user] SIP 200 packets rejected on trunk

El Thu, 17 Jan 2013 12:07:36 +0100
Andreas Granig <agranig at sipwise.com> escribió:

> Hi Byron,
> 
> On 01/17/2013 11:51 AM, Byron Smith wrote:
> > I'm trying to set up a trunk with a remote peer but their SBC is 
> > rejecting my SIP 200 due to the Record-Route headers and he is 
> > asking me to remove these headers.
> 
> Record-Route headers are an integral part of SIP, and every device 
> compliant to SIP really MUST support them.
> 
> There is no way to remove them from the SPCE without completely and 
> horribly breaking the call flows.
> 
> If they insist on removing them, you better change your trunking 
> provider as they obviously don't know what they are doing.
> 


Andreas is 100% right. Please ask them an explanation regarding why you should remove your record-route headers. Maybe what they don't like is having "127.0.0.1" in the rr header (which is 100% valid).

I can't believe that a sbc can't hable rr headers.


btw, I agree with Andreas, you'd better change your provider. But I'd like to know what their explanation is first.


cheers,

Jon


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