The Aventail VPN client requires Sun Java to correctly function on Ubuntu. For whatever reason, the OpenJDK is not sufficient, and the client exhibits numerous bugs. Unfortunately, for Ubuntu 10.04 LTS, Canonical decided to move Sun Java to the partner repository. It’s no-longer
apt-get-able by default.
No worries, we can easily add the parter repository, then install Sun Java.
sudo add-apt-repository "deb http://archive.canonical.com/ lucid partner" sudo apt-get update sudo apt-get install sun-java6-jre
Once completed, the Aventail VPN installation can proceed.
tar xf AventailConnect-Linux.tar sudo ./install.sh
If you did attempt to install Aventail using the OpenJDK, you’ll need to uninstall it and re-install after installing Sun Java. See