Great Circle Associates Firewalls
(May 1997)
 

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Subject: Re: Need to restrict http://www.nude.com and such
From: Ziv Dascalu <ziv @ AbirNet . com>
Date: Sun, 4 May 97 14:20:27 Israel Daylight Time
To: firewalls @ GreatCircle . COM, Gabriel Dura <dura @ geocities . com>
References: <336C3BEE . 2F82 @ geocities . com>

--- On Sun, 04 May 1997 00:34:06 -0700  Gabriel Dura <dura @
 geocities .
 com> wrote:
> Hi!
> 
> I don't think this subject needs so much debate... First of all it is
> absolutely necesary to outwit the employee in order to prove that it is
> guilty and then take the appropiate measures. Nobody can be accused
> without a good proof.
> 
> Now, most of the xxx sites contain a html meta in the web page header
> that look like this:
> 
> <META NAME="keywords" CONTENT="erotic stories, erotic stories, erotic
> stories, adult fiction, adult fiction, adult fiction, porn stories, porn
> stories, porn stories, XXX stories, XXX stories, XXX Stories">
> 
> Just have to filter the web pages containing this kind fo meta... Of
> course there also other words but there is no place for them here...
> There are no secret algorithms...
> 
> It is not a perfect method but it you can obtain good results...
> You can also log the access of these files and find the employees
> interested in this.
> 
> Also active modems can be detected and that call traced... In this way
> one can prevent unauthorised Internet connections using personal modems
> at the office...
> 
> Please anyone tell me if I'm wrong...
> Gabriel

---------------End of Original Message-----------------


It is absolutely necesary to outwit the employee in order to prove that it is guilty and then 
take the appropiate measures. Nobody can be accused without a good proof.

NO, most of the xxx sites do not contain a html meta in the web page header
that look like this:
 
<META NAME="keywords" CONTENT="erotic stories, erotic stories, erotic
 stories, adult fiction, adult fiction, adult fiction, porn stories, porn
 stories, porn stories, XXX stories, XXX stories, XXX Stories">

if they do have this that it is VERY easy Just have to filter the web pages containing this kind 
fo meta... Of course there also other words but there is no place for them here...
There are no secret algorithms...
But do you think that they REALLY want to be filtered out ?

This is why it is not a perfect method but it you can obtain good results...

By logging the access of these files and find the employees interested in this, you can 
avoid a lot of cases like this since one they know you are watching, they will avoid 
this.

/Ziv
--
SessionWall-3 offers an effective means of preventing employees or intruders from abusing the 
network. By monitoring all session traffic, it opens a unique window into how employees are 
using the network, and can pinpoint the need for defenses against outside threats
= Get an EVALUATION COPY at <http://www.AbirNet.com> =



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