RE: ISA server and secure VPN clients
- From: "Steve Moffat" <steve@xxxxxxxxxx>
- To: "ISA Mailing List" <isalist@xxxxxxxxxxxxx>
- Date: Mon, 25 Oct 2004 09:48:36 -0300
If users are logging onto your network with their own pc's, then that's
going to be the cause of all your woes.
There should be NO access from vpn clients that are not members of the
domain, for the simple fact that you have no control at all over users
own pc's unless you're going to visit each and every one of them to
check them out..
All vpn clients should be members of your domain in order for you to be
able to control access rights and security. If they have to use their
own pc's, then either use TS or citrix for these clients.
S
-----Original Message-----
From: Michael Bertelsen [mailto:mbe@xxxxxxxxxxxxx]
Sent: Monday, October 25, 2004 10:45 AM
To: ISA Mailing List
Subject: [isalist] RE: ISA server and secure VPN clients
http://www.ISAserver.org
Hi Tom
I do realize that you can seriously lockdown a client VPN tunnel to only
allow the traffic you need to pass-through it, but still the problem I
am talking about on the client, is a hacker remote controlling a VPN
client, and using that to stage an attack on whatever services is
availably to that VPN client, and not a hacker or virus using the VPN
client as a router.
This core problem, as I see it, is the lack of ability to securely
control the client.
Maybe it is just me being paranoid, but in most security designs I see
the VPN clients as being the weakest link, which is why this is the area
I focus much of the energy.
Do you know of anyway to lock down the VPN client other than stripping
the user of his local admin rights? It would be great if the was
continuing process that monitored the client computer to make sure that
it maintained the required level of security (Firewall, Antivirus,
Routing table etc.) after the tunnel has been established, instead of
only checking it during the connection phase.
Regards,
Michael
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