Great Circle Associates Firewalls
(February 1998)
 

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Subject: FW: Encryption thru Raptor firewall
From: Bruno Coelho <akbal @ visualnet . com . br>
Date: Mon, 16 Feb 1998 20:47:16 -0300
To: "'firewalls @ greatcircle . com'" <firewalls @ greatcircle . com>

Hi,

I would like to know, how does Raptor deals with encrypted traffic? Imagine the following cenario:

1 Raptor Firewall between me internal lan and the internet and 2 web servers (the two web servers both run IIS 3 on NT 4.0). One of the web servers, acts as a normal web server, with clear traffic thru port 80. The external clients just access www.thecompany.com and browse the corporate web. The other web server, runs a specific application. The external users have to connect to www.application.company.com:99 (yes, another port number, not actually 99) and both the browsers and web servers are digitally signed and encrypt traffic between them.

I now the crypto solution works well without the Raptor firewall. As a proxies firewall, I would like to know what should I do - open a generic proxy, use the standard http proxy... - to pass the encrypted traffic as it passes without the firewall?? The packets mantain the header, but the remaining data gets encrypted. Does the proxy knows how to handle it???

Thank for any help!

Bruno Coelho
http://www.modulo.com.br
bcoelho @
 modulo .
 com .
 br


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