[VOIPSEC] Open SBC?
howethomas at aol.com
howethomas at aol.com
Wed May 9 17:11:31 BST 2007
Hi Martyn -
More fuel for the fire -
Yes, I did some work on doing an OpenSBC last year, but I decided to drop the effort when I couldn't resolve the standards issue. SBCs aren't described in any standards body I'm aware of, and certainly not in SIP. In fact, SBCs are quite antithetical to SIP architecture design and principles. I'm not going to go into any comments about who's to blame for this one : the SIP architects for failing to understand there is a place in networks to capture and enforce business rules across network boundaries, or SBC manufacturers for throwing all the functionality they could into a single-point-of-failure device, without a common industry definition for what it is or what it does. I visualize two hungry dogs around the food bowl - I don't want to be lunch.
So, to answer your question : you could do much of what most SBCs do with the Asterisk and SER approach that Klaus suggests, or with Freeswitch, or you could call Henry Sinnreich and get a lecture about why you would want to do something as silly as deploy an SBC in the first place.
Thomas S. Howe
howethomas at aol.com - http://www.thomashowe.com
From: klaus.mailinglists at pernau.at
To: Martyn.Davies at dialogic.com
Cc: voipsec at voipsa.org
Sent: Wed, 9 May 2007 3:52 AM
Subject: Re: [VOIPSEC] Open SBC?
It depends on features you require from a SBC. E.g. ser/openser is very
powerful for NAT traversal. There are also modules to block DoS
For other features like topology hiding and call tear down you need a
B2BUA, thus ser/openser can't be used - but Asterisk.
Thus, if you want an openser source SBC you can combine (open)ser and
Asterisk nad you will have a very flexible SBC - but of course it will
be lot of work for configuration and wont run out-of-the-box like
Martyn Davies wrote:
> I put a call out on my blog the other day
> (http://martyndavies.livejournal.com/27327.html) about whether any group
> had tried putting together an open source Session Border Controller. I
> got some interesting responses, but I wanted to throw the question up to
> a wider audience. Does anyone on the Voipsec list know of such a thing?
> Or taking a slightly different tack, is anyone familiar enough with
> Freeswitch (http://www.freeswitch.org/) to comment on the feasibility of
> building an SBC with Freeswitch?
> Thanks & Regards,
> | Martyn Davies, Principal Consultant
> | Dialogic
> | Kings Chase, 107-123 King St, Maidenhead, SL6 1DP, UK
> | Tel: +44 1628 641 790 x 210
> | Cell: +44 7881 908 381
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> | martyn.davies at dialogic.com <mailto:martyn.davies at dialogic.com>
> | blog: http://www.dialogic.com/drc <http://www.dialogic.com/drc>
> | blog: http://voipsa.org/blog <http://voipsa.org/blog>
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