[VOIPSEC] An issue of trust?

[Andre Fucs de Miranda]

Randell,

First of all I would make a remark. Adding and SBC doesn't means that you
"add a point of failure". This only happens if your SBC doesn't support any
kind of redundancy. Not only that, but companies had been using layer 2, 3
and 7 firewalls although they create a bunch of problems including NAT,
latency, throughput limitations, points of failure, costs, etc. Curiously
firewalls are not real technical requirements of secure networks, still they
are used.

Despite the facts above, you should also remember that SBCs are not the only
way of deploying CALEA, their role is a requisite only when you cannot
provide it through other ways.

Regarding cost, I guess that most of the VoIP players are going to be pushed
out of the market not because of CALEA but through fraud, rates and other
business related issues.

Best regards,

Andre Fucs

---- Mensagem Original ----
From: "Randell Jesup"
To: "Andre Fucs de Miranda"
Sent: Sab, Junho 17, 2006 4:20 am
Subject: Re: [VOIPSEC] An issue of trust?

>
> An SBC (or equivalent) setup has issues when the provider of the proxy
> doesn't also control the access link to the subscriber.  The issues have to
> do with call quality, and to enable the 1 in 100,000,000 chance a call will
> need to be intercepted (excluding police states or "trolling"...), ALL
> calls will be slightly to severely negatively impacted (added delay, packet
> loss, point of failure).  And the cost is far from negligible as the
> revenue model shifts away from traditional POTS models.
>
> --
> Randell Jesup, Worldgate (developers of the Ojo videophone), ex-Amiga OS
> team
> rjesup at wgate.com
> "The fetters imposed on liberty at home have ever been forged out of the
> weapons
> provided for defence against real, pretended, or imaginary dangers from
> abroad."
> 		- James Madison, 4th US president (1751-1836)
>
>