Quarantine is the most interesting technology to protect your
company against attacks coming from the VPN users. There are a lot of good
technical reasons to implement it.
Another good way to be convinced by this threat is to check the articles and
surveys done by well known companies.
Here is a list of surveys and articles you may check to make your
Partners Demonstrate Broad Support For Network Access Protection
Technology From Microsoft
"Microsoft anticipates that the initial release of Network
Access Protection will be delivered with Windows Server "Longhorn,"
the next version of the Windows Server operating system, due to
release in 2007."
The Gartner made a lot of surveys about
remote users threat, quarantine, ...
to Combat Rapidly Spread Cyberattacks
Wait for Cisco and Microsoft to Scan and Block Attacks
Your Resources With a Network Access Control Process
Statistics: Enterprise Routers, Firewalls and VPN Equipment,
Worldwide, 2004 (Preliminary)
Access Control Market Overview
Software Market Forecast, 2003-2007 (Executive Summary)
Sense Of Network Quarantine
The Right Network Quarantine Solution
Cisco And Microsoft Won't Clash On Network Quarantine
Self-Defending Network: Not Yet
Sales Are Strong, With AT&T In The Leat
VPNs: Securing Mobile Remote Access
Security: Network Quarantine's Dark Horse