I have a macbook from which I connect to my company's VPN using L2tp. This is a "shared secret" session. Now I want to connect from a ubuntu box.
I've already done a lot of research on the web and installed vpnc, which is supposed to solve the problem. I put the following:
IKE Authmode psk

Local Port 10000 NAT

Traversal Mode cisco-udp
into /etc/vpnc/default.conf file and I give the right username/passwd from the command line when connecting, but the only results is "vpnc: no response from target".
One (possibly important) thing is that "Group name" in my mac's VPN Authentication settings is left blank.
Can anyone help we with this?