Error 800 while connecting to VPN

vpnwindows-xp

I am trying to connect to my office network through VPN. It used to work fine earlier but now as soon as I hit connect, I get Error 800:

Error 800: Unable to establish VPN Connection. The VPN server may be unreachable, or security parameters may not be configured properly for this connection.

I am using Windows XP and I am able to ping the VPN server successfully. I have Symantec Endpoint Protection installed (if it matters). I have tried disabling it as well but nothing changes.

Best Answer

COULD be a GRE routing issue on your home router (mine had the crap at one time).

PPTP VPN use a TCP cahnnel for cordination, and then the packets are sent using GRE (ip subprotocol 47 - not tcp, not udp). If the router or a firewall drops those....

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Cisco ASA 5505 – L2TP over IPsec

Can you post the output of your log while trying to establish a vpn connection at the debugging level? (in the asdm go to Monitoring -> Logging -> set logging level to debug in the drop down -> click view)

Also unless there is a compelling reason to stay at 7.2(4) I would upgrade to the latest 8.x release. The 7.2 series had some pretty major issues.

EDIT

That error means that the interface the incoming vpn is setup on doesn't have a crypto-map applied.

if you were following the instructions there, you probably applied the crypto map like this:

crypto map outside_map interface outside

if you are testing on the same lan you would need to do this:

crypto map outside_map interface inside

Ugly i know but it'll let you test, then remove from the inside interface and you are good to go.

If that doesn't work, would you be willing put post your running config?

EDIT 2:

Ok, lets simplify this config a little. Try disconnecting the XP machine from the ASA. And also remove the 192.168.1.1 ip address and DHCP pool from the ASA. Then try to connect via the vpn.

Router – DD-WRT VPN error 800

Rebooting the rooter seemed to clear the problem.

Best Answer

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Cisco ASA 5505 – L2TP over IPsec

Router – DD-WRT VPN error 800

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