RE: Is it possible to bypass Proxy servers ?? Help me out

  • From: "Ara Avvali" <ara.avvali@xxxxxxxxxxxxx>
  • To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
  • Date: Sat, 7 Jan 2006 23:36:11 -0800

Hi
It might not be a good idea to assign permission based on IP addresses
as most people use dhcp and it changes very often. If ISA is a domain
member, create permission based on users. Most likely his ip address is
listed in your allow policy. 

-----Original Message-----
From: Javeed Khan [mailto:jkhan@xxxxxxxxxxxxxxxxx] 
Sent: Saturday, January 07, 2006 10:02 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Is it possible to bypass Proxy servers ?? Help me out

http://www.ISAserver.org


Dear All,

I am using ISA 2004 server as a backend firewall and PIX 515 is my front
end firewall.

Recently i found one of our internal user is using his messenger and web
browsing with out having internet access in ISA 2004 server.
I created a list of allowed users set in ISA, and applied the firewall
policy according to the IP address of the authorized users. But still
the
unauthorized user can able to browse the websites.

How can i monitor his activity to ensure he is voilating our company
policies for further action.
Give me your valuable suggession to over come this issue.

Thanks in Advance

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