Nat and IPSEC Don't get along very well. Adam -----Original Message----- From: Brian Hoover [mailto:brianh@xxxxxxxxx] Sent: Friday, May 03, 2002 3:44 PM To: [ISAserver.org Discussion List] Subject: [isalist] IPSec through Cable router http://www.ISAserver.org Hello All, If this has been covered I apologize. I haven't found this issue on isaserver.org. I'm trying to run IPSec/VPN client connection through a D-Link DSL/cable router. The connections have been verified with PPTP. L2TP has been verified with a direct connection to the ISA external I/F but after adding the D-Link NAT router the connection barfs with err 791, L2TP failed because the security policy was not found. Config 1. Works for both L2TP and PPTP workstation -> ISA -> LAN Config 2. PPTP but no L2TP WS -> NAT-Router -> ISA -> LAN I only know a thimble full about IPSec, so my first question is are there any recommendations for a reference that is somewhere between the RFC and the dummies books? Also if anyone can shortcut me to the direct answer, that would be appreciated as well. Thanks, Brian ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: Adam.Staub@xxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ********************************************************************* Note: This E-mail and any attachments may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of this E-mail and any attachments is strictly prohibited. If you have received this E-mail in error, please notify us immediately by returning it to the sender and deleting it from your computer system. Thank you for your cooperation. **********************************************************************