We have an outside vendor who needs to access our network. They use Sonicwall VPN client to connect to our Sonicwall Pro 2040. their connection works properly, status shows up as "connnected", and I see them in the user logs on the sonicwall as being logged in. They can't ping anything on our network, though, for some reason, can't browse, can't use remote desktop, etc. I have dozens of other remote users doing exactly the same thing, and none of them has this problem. What could prevent them from connecting?