Knowledge Base and Tips - L2TP/IPSec NAT-T Update for Windows XP and...

Title:

L2TP/IPSec NAT-T Update for Windows XP and Windows 2000

Body:

Microsoft has released an update package to enhance the current functionality of the Layer Two Tunneling Protocol (L2TP) and Internet Protocol security (IPSec) on computers that are running Windows XP or Windows 2000.

This update includes improvements to IPSec to better support virtual private network (VPN) clients that are behind network address translation (NAT) devices.

If you apply this update to a computer that is running Windows XP and if the IPSec service encounters a runtime error and cannot start for any reason, the IPSec driver operates in block mode because it cannot secure network traffic. (The IPSec service appears as "IPSEC services" in the list of system services.)

Article Contents
New IPSec Features and Management and Monitor
nap-ins
Interoperability and Known Issues
Windows XP Update
Windows 2000 Update
References

MORE INFORMATION

New IPSec Features and Management and Monitor Snap-ins
After installing this update, L2TP/IPSec clients can create IPSec connections from behind a NAT server. The new NAT-T code is designed around the IETF RFC 3193 and draft-02 of the IETF NAT-T specification.

http://support.microsoft.com/default.aspx?scid=kb;en-us;818043

KB Article by ID Number:

818043

Directory Services Keywords:

Accessibility W2000ACCESS

General Services Keywords:

SECURITY

Technologies Keywords:

Networking Keywords:

Tunneling W2000TUNNEL

Expires:

Attachments:

Created at 6/4/2004 7:46 AM by Jean-François APREA

Last modified at 6/4/2004 7:46 AM by Jean-François APREA