Unable to connect to Windows VPN in Ubuntu 11.10

Solution 1:

How to set up VPN in Ubuntu (when you know the parameters to configure):

Click the network icon in the panel → VPN Connections → Configure VPN.

Go to VPN tab → Add.

Create.

Enter settings, optionally mark Connect automatically, Save.

You can connect via the network icon in the panel.

Ps. If you're trying to connect to a Windows VPN and still not working, try the below method suggested by Jason Rowe:

Try going into "Advanced" on the VPN tab and enable "Use Point-to-Point encryption (MPPE)", set security to "All Available (Default)" and tick the boxes for "Allow BSD data compression", "Allow Deflate data compression", and "Use TCP header compression".

Solution 2:

Thanks for the additional info.

Try going into "Advanced" on the VPN tab and enable "Use Point-to-Point encryption (MPPE)", set security to "All Available (Default)" and tick the boxes for "Allow BSD data compression", "Allow Deflate data compression", and "Use TCP header compression".

Solution 3:

click "advanced" button, then only select MSCHAP and MSCHAPv2 authentication methods. You'd better select every option in other fields.