[Serusers] SIP encrypted calls

[Nils Ohlmeier]

On Friday 25 February 2005 20:25, Vitaly Nikolaev wrote:
> 1. is there any SRTP aware termination GW/softswitches wide known

I dont know any gateways with SRTP support. Which does not mean they dont 
exist :)

> 2. can cisco 2650MX handle traffic from 24 simultaneous calls G711 ?
> 3. Can SAME cisco get those calls via T1 and then forward via SIP ?

Ask your friendly Cisco support :)

Regards
  Nils

> Wrong list for that :) I know
>
>
> -----Original Message-----
> From: serusers-bounces at iptel.org [mailto:serusers-bounces at lists.iptel.org] On
> Behalf Of Nils Ohlmeier
> Sent: Friday, February 25, 2005 2:10 PM
> To: serusers at lists.iptel.org
> Cc: Stefano
> Subject: Re: [Serusers] SIP encrypted calls
>
> On Friday 25 February 2005 12:02, Stefano wrote:
> > I'd like to encrypt media, but i thought there should be some client that
> > can do it
> > without changing proxy behaviour!
>
> There are clients. See my previous mail. SRTP is completely transparent for
> SIP proxies.
>
> > Anyway IPSec seems a good solution, but if I configure the proxy server
>
> for
>
> > IPSec, can i handle both encrypted and not encrypted calls?
>
> You should be able to receive messages encrypted over IPSec as well as the
> plain old messages.
> But this solution will only work if you put an IPSec gateway in front of a
> complete subnetwork with phones in it or use only soft-phones. Because I do
> not know any hard phones which support IPSec (correct me if I'm wrong).
>
> Greetings
>   Nils
>
> > stafano
> >
> > >-- Messaggio Originale --
> > >Date: Thu, 24 Feb 2005 17:13:00 +0100
> > >From: Daniel-Constantin Mierla
> > > <Daniel-Constantin.Mierla at fokus.fraunhofer.de> To: Stefano
> > > <stefanoblasco at tiscali.it>
> > >CC: serusers at lists.iptel.org
> > >Subject: Re: [Serusers] SIP encrypted calls
> > >
> > >
> > >You want to encrypt the signaling, media or everything?
> > >
> > >For everything I guess IPsec is the solution, for signaling only, TLS
> > >can be an alternative to IPsec. Just for media, a solution would be
> > >Secure-RTP but I am not aware of any client implementing it.
> > >
> > >If the signaling is encrypted, the proxy must know how to decrypt it.
> > >
> > >Daniel
> > >
> > >On 02/24/05 15:37, Stefano wrote:
> > >>Hi all,
> > >>
> > >>i have a question:
> > >>
> > >>-do you know how it's possible to encrypt the comunication between two
> >
> > SIP
> >
> > >>client?
> > >>
> > >>-does the proxy implement some particular tasks or actions, or is it a
> >
> > client-side
> >
> > >>problem?
> > >>
> > >>-if it is so, do you know any SIP client that implements encription?
> > >>
> > >>Thank you very much
> > >>stefano
> > >>
> > >>__________________________________________________________________
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> > >>
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