Question regarding web hosting ip addressing

Fri Jul 12 20:22:48 UTC 2002

On Fri, Jul 12, 2002 at 07:17:35AM -0700, Scott Francis wrote:
> On Fri, Jul 12, 2002 at 08:25:25AM -0400, kramert at mlrnoc.navy.mil said:
> > Odd.  I've run multiple "https:" sites on one IP.  The browser
> > will complain about the certificate but you can always have
> > a different certificate for each site while using one IP address.
> > (Correct me if I'm wrong!)

You're wrong.  :)  The SSL exchange happens before the HTTP protocol over
SSL can begin, and so the server has no idea which cert to send; or more
practically, just has one cert configured per (host,port).

There is a defined mechanism to do HTTPS over port 80 using a mechanism
called Upgrade and inband TLS.  This will make it possible to do name
based vhosts and encryption, because you provide a Host: header along 
with the Upgrade: TLS/1.0 header.

> According to http://httpd.apache.org/docs/vhosts/name-based.html (thanks
> Gerald), name-based hosting cannot be used with SSL due to the nature of the
> SSL protocol.

Yep.

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