[OpenSIPS-Users] SIP Trunking

[Ghaith ALKAYYEM]

It's possible also to use RTPproxy, because it's designed to work in
bridging mode where it can forward the traffic from the internal network
towards external one.

Regards

On Thu, 2009-08-20 at 12:55 -0600, Darren Sessions wrote:
> Media Proxy will work with public internet addresses but, and this is  
> just my understanding, was not built for use with private IPs let  
> alone bridging from one subnet to another.
> 
> If your keeping the gateways on a private network is for security  
> purposes, you may consider giving them public ips on the same subnet  
> as your opensips and mediaproxy setup, but not specifying a default  
> gateway.
> 
> Essentially, this would allow the media proxy to do its job relaying  
> the audio, while still preventing 99% of any unwanted traffic to your  
> gateways. Couple that will firehol or some other cool iptables app (or  
> manually configure it if you like) and you'd be sitting pretty secure  
> I would think.
> 
> Really depends on what you've designed (and why).
> 
> - Darren
> 
> 
> On Aug 20, 2009, at 12:49 PM, Matthew S. Crocker wrote:
> 
> >
> > I understand that OpenSIPS is not a full blown SBC (I can't afford  
> > an ACMEPacket).  Will it perform the functions to proxy the SIP &  
> > RTP streams (via mediaproxy) between my end users and my internal  
> > gateway?
> >
> > At some point I plan on increasing the use of openSIPS to handle  
> > registration, presence, routing, etc.
> >
> > -Matt
> >
> > ----- "Alex Balashov" <abalashov at evaristesys.com> wrote:
> >
> >> From: "Alex Balashov" <abalashov at evaristesys.com>
> >> To: "OpenSIPS users mailling list" <users at lists.opensips.org>
> >> Sent: Thursday, August 20, 2009 1:58:48 PM GMT -05:00 US/Canada  
> >> Eastern
> >> Subject: Re: [OpenSIPS-Users] SIP Trunking
> >>
> >> Matthew,
> >>
> >> Look for the mediaproxy module.
> >>
> >> That said, do be aware that a proxy is, by definition, not like an
> >> SBC.
> >>  SBCs have many other capabilities a proxy does not;  a proxy is a
> >> relatively "thin" interoperation layer.
> >>
> >> Perhaps the recently introduced b2bua module is brought to bear on
> >> that
> >> somewhat, but classically, OpenSIPS is a proxy.
> >>
> >> -- Alex
> >>
> >> Matthew S. Crocker wrote:
> >>
> >>> Hello,
> >>>
> >>> I'm brand new to OpenSIPS, just going through the make process now.
> >>
> >>>
> >>> I need to configure OpenSIPS to act like a SBC for some SIP trunks
> >> coming off a VoIP switch.  Where should I look for
> >> Documentation/Examples of a working config?
> >>>
> >>> Here is my scenario:
> >>>
> >>> OpenSIPS has two interfaces,  private & public.
> >>> VoIP Gateway is on private LAN with no gateway configured (it can
> >> only talk to local machines, no routing)
> >>>
> >>> End user has an Asterisk server on a private lan behind their
> >> firewall (NAT)
> >>>
> >>> I need to configure OpenSIPS to listen for SIP messages on :5060
> >> from the end user firewall.  It then need to rewrite the SIP message
> >> and send it to the Gateway.  The Gateway would see the messages  
> >> coming
> >> from the internal IP of the OpenSIPS server.  Once all of the SIP
> >> messages get processed I then need the OpenSIPS server to proxy the
> >> RTP streams (plan on using mediaproxy) between the Asterisk server  
> >> and
> >> VoIP Gateway.
> >>>
> >>> Any helpful hints on where to look?
> >>>
> >>> -Matt
> >>>
> >>>
> >>
> >>
> >> -- 
> >> Alex Balashov - Principal
> >> Evariste Systems
> >> Web     : http://www.evaristesys.com/
> >> Tel     : (+1) (678) 954-0670
> >> Direct  : (+1) (678) 954-0671
> >>
> >> _______________________________________________
> >> Users mailing list
> >> Users at lists.opensips.org
> >> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
> >
> > -- 
> > Matthew S. Crocker
> > President
> > Crocker Communications, Inc.
> > PO BOX 710
> > Greenfield, MA 01302-0710
> > http://www.crocker.com
> > P: 413-746-2760
> >
> >
> > _______________________________________________
> > Users mailing list
> > Users at lists.opensips.org
> > http://lists.opensips.org/cgi-bin/mailman/listinfo/users
> 
> 
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