[Serusers] RTP Wiretapping

Java Rockx javarockx at gmail.com
Fri Mar 4 00:35:21 CET 2005


Jiri,

Do you think ser will eventually acquire wiretapping capabilities?

Regards,
Paul


On Thu, 3 Mar 2005 17:18:32 -0500, Terry Mac Millan <serweb at finian.net> wrote:
> If the modified RTP and non-modified RTP modules are on the same machine and
> most regular calls are already making use of the RTP, then the IP's
> shouldn't change at all. So the parties involved in the tapping will still
> see the same IP address at the providers end, which shouldn't give it away
> if they are being tapped.
> 
> It would be nice to ignore, but when the authorities come to the front desk
> with orders to tap and collect, there needs to be a means to do that so that
> you don't end up getting slapped with an Obstruct justice charge. So there
> does need to be a method available, or work around, to impliment to comply
> with the orders.
> 
> Terry
> ----- Original Message -----
> From: "Jiri Kuthan" <jiri at iptel.org>
> To: "Java Rockx" <javarockx at gmail.com>; <ser at cannes.f9.co.uk>
> Cc: <serusers at lists.iptel.org>
> Sent: Thursday, March 03, 2005 4:01 PM
> Subject: Re: [Serusers] RTP Wiretapping
> 
> > The challenge with this approach is how you make intercepted calls
> > non-distinguishable from regular calls. The intercepted party may
> > watch signaling and notice service provider's IP addresses. Also,
> > the quality may degrade through use of RTP relay.
> >
> > A possible option is to ingore this problem.
> >
> > Other option would be to implement interception in edge routers.
> > Obviously, it is not an easy one.
> >
> > -jiri
> >
> > At 01:16 PM 3/2/2005, Java Rockx wrote:
> > >I was thinking about having a group called "spy" in the grp table and
> > >anyone with this ACL would be sent to a modified mediaproxy that would
> > >capture the RTP.
> > >
> > >User that don't have the "spy" ACL would be handled normally and if
> > >NAT traversal is needed then use an unmodified media proxy.
> > >
> > >Regards,
> > >Paul
> > >
> > >
> > >On Wed, 2 Mar 2005 08:00:24 -0000, Chris <ser at cannes.f9.co.uk> wrote:
> > >> Why not use a from/to etc detection in .cfg (using database...)
> > >> to trigger a remote proxy through the requesting agency
> > >> They then have the capture issue
> > >> and you have no monitor or delivery issues?
> > >> Might require conditions of their placement of a proxy?
> > >> (but is their problem)
> > >> Regards
> > >> Chris
> > >>
> > >> -----Original Message-----
> > >> From: serusers-bounces at iptel.org [mailto:serusers-bounces at lists.iptel.org] On
> > >> Behalf Of Java Rockx
> > >> Sent: 26 February 2005 14:29
> > >> To: serusers at lists.iptel.org
> > >> Subject: [Serusers] RTP Wiretapping
> > >>
> > >> Hi All.
> > >>
> > >> I'm located in the US and would like to comply with the Communications
> > >> Assistance for Law Enforcement Act (CALEA) that Congress passed which
> > >> basically says that VoIP providers should have the ability to wiretap
> > >> conversations for the FBI upon request.
> > >>
> > >> I use mediaproxy for NAT traversal. So my question is how can I be
> > >> CALEA compliant? I assume I should be able to modify mediaproxy to
> > >> write RTP streams to disk, but I'm unclear on how to "mix" both sides
> > >> of the conversation.
> > >>
> > >> Can anyone help with a suggestion?
> > >>
> > >> Regards,
> > >> Paul
> > >>
> > >> _______________________________________________
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> > >> serusers at lists.iptel.org
> > >> http://lists.iptel.org/mailman/listinfo/serusers
> > >>
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> > >
> > >_______________________________________________
> > >Serusers mailing list
> > >serusers at lists.iptel.org
> > >http://lists.iptel.org/mailman/listinfo/serusers
> >
> > --
> > Jiri Kuthan            http://iptel.org/~jiri/
> >
> > _______________________________________________
> > Serusers mailing list
> > serusers at lists.iptel.org
> > http://lists.iptel.org/mailman/listinfo/serusers
> >
> >
> 
>




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