I'm trying to set up the L2TP VPN server built into my Sonicwall TZ 170 security applicance in order to connect to it using the MS Windows2000/XP VPN client. I've enabled the L2TP server in my Sonicwall and created a VPN user. The problem is, when I try to connect using the WinXP VPN client, I get the following error messages:
1) If I set the VPN type to Autodetect in the Windows client, it is unable to connect because "the security settings might be wrong" (which could mean anything).2) If I explicitly set the VPN type to L2TP in the Windows client, it says that a certificate is required on my PC for this connection. I don't have any problems connecting to other VPNs without a certificate, however.
How can I get this working?