I've got a Ubuntu 13.04 desktop and I need to connect to a Sonicwall VPN appliance using NetExtender. TL,DR, the VPN connects fine, but then I can't reach any internet or LAN websites.
First I installed the right libraries and the most recent SUN Java (not Open JDK) using this article:
Once I did that, and installed the most recent NetExtender client from the My Sonicwall website, the connection succeeds.
It's configured for Tunnel All mode so all traffic is supposed to go through the VPN, except that I can't reach any internet sites or LAN sites.
I've duplicated this problem on a second Ubuntu desktop, and I see it in 12.04 also.
I can connect from Mac or Windows using the same account, so I don't think it's a problem with the Sonicwall policies or user account.