Lot's of reasons. Here are a couple of the most common ones:
You proxy is probably doing NAT. IPSec breaks in many NAT situations. Try turning on UDP encapsulation so the IPSec tunnel is encapsulate in an innocent looking UDP packet. IPSec VPN is tunneled on IP protocol 50. Not PORT 50 but IP protocol 50. Many firewalls have a problem with that or must be specifically configured to allow IP protocol 50. Good luck, Adam Adam Safier Global Systems & Strategies, Inc. 7000 Security Blvd., Suite 300 Baltimore, Md. 21244 (443) 436-6393 [EMAIL PROTECTED] ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, May 23, 2002 5:34 PM Subject: Can't establish a VPN Connection > This is my first post to the list as I just joined today. > > I'm trying to establish a VPN connection from LAN side computers to an AS400 > machine using SecuRemote VPN and Client Access (emulation app). I am going > thru a MS Proxy server and a Netopia router with just the basic firewall > enabled. I cannot connect. I can, however, if I put a PC outside the LAN > with a public IP. > > The Proxy server has all ports open to the remote public IP addy. > > Any ideas why I cannot connect from inside the LAN? > > Thanks for any help or advice. > > > > > Bill Lambert > > Endoxy Healthcare > 847-941-9206 > [EMAIL PROTECTED] > _______________________________________________ > Firewalls mailing list > [EMAIL PROTECTED] > For Account Management (unsubscribe, get/change password, etc) Please go to: > http://lists.gnac.net/mailman/listinfo/firewalls > _______________________________________________ Firewalls mailing list [EMAIL PROTECTED] For Account Management (unsubscribe, get/change password, etc) Please go to: http://lists.gnac.net/mailman/listinfo/firewalls
