PIX 506E VPN error "Reason 433" (no one seems to know how to fix this)

Jul 20, 2005 5 Replies

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Travis 21 years ago

This is driving me nuts. I setup a ipsec/ike vpn on my cisco pix with the PDM wizard. It works great...., but when I get a 2nd user to connects to the PIX, it boots the 1st user off and gives this error code....

"Secure VPN Connection terminated by Perr. Reason 433: (Reason Not Specified by Peer)"

I'm using Cisco VPN client Version is "4.6.03.0021". It's installed on two Windows XP laptops (all windows updates) with no firewall. Windows XP firewall is turned off on both laptops.

My PIX 506E info: PIX version 6.3(4), PDM 3.0(2)

Any help would be great. I've looked all over cisco's site and the web...., and came up with nothing on this error code.

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www.BradReese.Com 21 years ago

Hi Travis,

Look to see if your laptop has something called "Network Bridge" under Network Connections.

Try removing the "LAN Connections" from Network Bridge and see if it works now.

Hope this helps,

Brad Reese BradReese.Com Cisco Repair Service Experts

1293 Hendersonville Road, Suite 17 Asheville, North Carolina USA 28803 U.S. Toll Free: 877-549-2680 International: 828-277-7272 Website:

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rave 21 years ago

this is a typical case of both laptops are sitting behind a nat/pat device. ifthat is the case then go to the PIX and type in the following command: isakmp nat-t

This will allow multple connections from same nat/pat address with encapsulation with UDP 4500

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