RE: SSL Reverse Proxy

[Lucas Zaichkowsky <Lucas () dnsys com>]

You can install the certificate on both servers.  The clients will only be
looking at the host name along with the CA signature to determine validity.
There's nothing tying a certificate to the IP.

To do what you want with Microsoft ISA, you'll need to install the
certificate and private key on the ISA server.  Then, setup rules to forward
traffic based off the URL.

http://www.microsoft.com/technet/treeview/default.asp?url=/technet/prodtechn
ol/isa/proddocs/isadocs/M_P_C_WebPubRule.asp

If you want the SSL tunnel to go all the way to the web servers, you'll need
to install the certificate and private key on both servers and find a load
balancer that can redirect by URL.  Personally, I don't know of a load
balancer that does this, but I'd imagine that the feature isn't too unusual.

-Lucas


-----Original Message-----
From: Andrea Cogliati [mailto:AndreaC () gotech it]
Sent: Monday, April 28, 2003 6:07 AM
To: security-basics () securityfocus com
Subject: SSL Reverse Proxy


Guys,

We are looking for a reverse-proxy supporting both http and https,
capable of terminating the client connections and redirecting the
requests based on URL  (something like MS ISA); caching would be nice to
have but, definitely, not mandatory; must run on OpenBSD and/or Linux.

We already know the security implications of this approach. We basically
need to share the same SSL certificate and the same DNS name between two
different servers. That is, https://mydomain.com/appA and
https://mydomain.com/appB, where requests to the first URL will be
handled by server A, and those to the latter by server B. Any hints?

Thank you in advance for any advice.

Andrea

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