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Firewall Wizards: Re: Security of HTTPS

Re: Security of HTTPS

From: David Lang <david.lang_at_digitalinsight.com>
Date: Sat, 25 Dec 2004 00:10:16 -0800 (PST)

sorry for the late reply, catching up on my mail

On Wed, 1 Dec 2004, Kevin wrote:

> Getting back on the topic of firewalls, I wonder if it would be
> possible for a firewall not doing MITM for SSL to validate the
> certificate presented by the remote server, and terminate the
> attempted SSL session if the certificate does not match the remote
> host, is not signed by an acceptable CA or has been revoked?

the problem is that the firewall doesn't know what the client is expecting
to see in the cert. it could check to see if the cert was signed by a
known orginization, but not if the identity of the host matches the
identity stipulated in the cert

David Lang

-- 
There are two ways of constructing a software design. One way is to make it so simple that there are obviously no deficiencies. And the other way is to make it so complicated that there are no obvious deficiencies.
  -- C.A.R. Hoare
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Received on Dec 27 2004
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