[VOIPSEC] need info

[dan_york at Mitel.com]

Anand,

I've actually not seen anywhere a concise list of the specific signalling 
protocols used by all of us who create IP-PBXs.  There's a long list of 
the vendors in the voip-info.org wiki at:
 
  http://www.voip-info.org/wiki/index.php?page=VOIP+PBX+and+Servers

but you might have to hunt through that to find the info you are looking 
at. 

Regarding your specific list of vendors, there are folks here on the 
mailing list from many of those vendors.  I think the question is really 
for you - *where* are you trying to capture and evaluate the signalling? 

Are you trying to capture the traffic between handset and IP PBX?  Between 
multiple IP PBXs?  Trunking out to a service provider? 

Different signalling protocols are going to be used at different places. 
Between handset and IP PBX, I believe Cisco generally uses SCCP (aka 
"Skinny") and now also supports SIP.  I believe Nortel's systems generally 
use their own UNISTIM but also support SIP.  Not entirely sure of the 
specific protocols used on the Siemens and Ericsson systems between their 
handsets and systems.   This may also vary by vendor based on which IP PBX 
you  are using, as some vendors may have different PBXs that support 
different signalling protocols.

So what protocols you see will really vary widely depending upon where you 
are looking at the traffic and specifically which devices you are testing. 
 Probably the only really good way for you to figure that out may be to 
dig through the technical documentation for the specific pieces of 
equipment that you have.

Regards,
Dan

P.S. For anyone seeking a distraction for a few minutes (and with the 
knowledge), the Wikipedia article on signaling protocols is in *serious* 
need of content!  See:

  http://en.wikipedia.org/wiki/Signaling_protocol

-- 
Dan York, CISSP
Dir of IP Technology, Office of the CTO
Mitel Corp.     http://www.mitel.com
dan_york at mitel.com +1-613-592-2122
PGP key (F7E3C3B4) available for 
secure communication





"Anand Thangaraj" <anandthangaraj at gmail.com>
Sent by: Voipsec-bounces at voipsa.org
06/02/2006 09:25 AM

 
        To:     Voipsec at voipsa.org
        cc: 
        Subject:        Re: [VOIPSEC] need info


 thank you for all the paper...


i still got one more query,

can any one give information on  vendors CISCO, NORTEL,SIEMENS, ERICSSON -
what kind of signalling protocol they use for their VOIP products

I will be happy if anyone can give information on all the support 
protocols
they use.


regards
 anand



On 6/1/06, Alexandre Passito <alexandre.passito at gmail.com> wrote:
>
> Again,
> I have a paper too. We used the signals and informations from the own
> softphone.
>
>  2006/6/1, Anand Thangaraj <anandthangaraj at gmail.com >:
>
> > hi ,
>
> can anyone give me any IEEE paper which deals with VOIP security,
>
> Iam mainly focussing on capturing the signals which is sent in a VOIP
> session,
>
> Is there any possibility to find an attack using these signal
> transmission.
>
>
> regards
>
> anand
> _______________________________________________
>
> Voipsec mailing list
> Voipsec at voipsa.org
> http://voipsa.org/mailman/listinfo/voipsec_voipsa.org
>
>
>
>
> --
> --
> Alexandre Passito - Estudante de Mestrado
> Universidade Federal do Amazonas (UFAM)
> Departamento de Ciência da Computação (DCC)
> --
> Alexandre Passito - M.Sc. Student
> Federal University of Amazonas (UFAM)
> Computer Science Department (DCC)
> --
> E-mail: passito at dcc.ufam.edu.br
> Web: www.dcc.ufam.edu.br/~passito
> Manaus - AM - Brasil
>
>
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