Great Circle Associates Firewalls
(September 1996)
 

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Subject: RE: Blocking non-http (executable) content
From: Ian Miller <firewalls @ scientia . com>
Date: Tue, 03 Sep 1996 08:54:37 +0100
To: firewalls @ greatcircle . com

At 16:46 02/09/96 -0700, Bill Stout <bill .
 stout @
 hidata .
 com> wrote:
>Hmm.  An OLE Proxy via Catapult only.  Next all other firewall vendors
>will have to play catch-up with Microsoft.
>
Given the power of OLE and its near total lack of even elementary integrity
checking let alone security checking, OLE is one of the last services anyone
should allow through a Firewall with or without proxies. 
(If you want a VPN, you can use a general NetBUI encrypted tunnel so don't
need proxies.)

I think that the trend towards increasing programmable features 
(e.g. Word/Excel macros, Java/Active-X etc.) is wholly incompatible with
achieving secure networks.  Regretably I fear this won't be appreciated by
a lot non-technical managers until lots of real damage has been done.

Ian


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From: "Geoffrey Ellison" <geoff @ smartnet . co . za>
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