The GWU ISS simply ignores the Linux users’ need on GWireless, there is no resource, no support for Linux user. From the screenshot of VPN client on Mac OSX platform, we can conclude that GWireless is secured by Cisco VPN client.

For Gentoo users, just

You might need to fill several forms for Cisco before you login and download vpnclient-linux-x86_64-4.6.03.0190-k9.tar.gz. Or you can get it from here. Copy it to /usr/portage/distfiles, and re-run the previous command.

For other users who are using latest kernel-2.6.14, you need to apply this patch, since 2.6.14 has changed the sk_buffer data structure, then

After that, you need to copy the profile profile from one Windows installation to /etc/opt/cisco-vpnclient/Profiles, and make it worldwide readable.

Update Due to the agreement of the Cisco VPN client, the profile file is removed, thanks to Mackenzie.

Enjoy!