Re: Security and VPN

["Thor (Hammer of God)" <thor () hammerofgod com>]

In my "Microsoft Ninjitsu: Black belt Edition" training at Blackhat Vegas, 
Dr. Tom Shinder, Jim Harrison and I go into great detail about how to use 
ISA Server 2006 to tightly control what users can do (starting off with 
nothing ;) via the VPN network segment and proper rule configuration.

Any VPN access should only allow the specific protocols to/from only the 
machines/services that are required for users to perform a given function.

Further, ISA Server 2006 allows for the checking of a client against 
specific requirements one imposes to see if the client "lives" in the VPN 
segment, or in the case of failing standards, the quarantined network 
segment.

In this day and age, any corporate VPN deployment should have means in place 
to impose these types of restrictions and provide these security mechanisms.

t

-------------
Veni, vidi, veni denuo.

Timothy Mullen, MVP, MCSE, MCT, MCSD
Vice President of Consulting Services
NGS Software
www.ngssoftware.com

Check out Thor's "Microsoft Ninjitsu: Black belt Edition" at Blackhat Vegas
2007!
http://www.blackhat.com/html/bh-usa-07/train-bh-us-07-tm-ms-bbe.html


----- Original Message ----- 
From: "Sohail Sarwar" <ssarwar () ecredit com>
To: "James Patterson" <jimp.securityfocus () gmail com>; 
<pen-test () securityfocus com>
Cc: <holstein.robert () bls gov>
Sent: Monday, June 18, 2007 6:08 AM
Subject: Security and VPN


Hi there,

I just wanted to put this out there.  How secure is VPN.
Meaning, if my users take home the client and install it on their
desktop at home, and connect to the corporate network and production
network, wheat are we really looking at.  Are they secure or not.

Two factor authentication would only help the authentication
purpose and to protect the user name and password ?

How about restricting them to access, and how about worrying
about their home computer that can be effected.

Has anyone been through this.  Any one give home users a list of
requirements that they must have before vpn can be offered to them ?

Should there be some type of desktop policy installed on their
home computer, just to protect the company network ?  Any help and
guidance would be great

Regards,
Sohail

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