Thanks to a post in the Ubuntu forum I was able to easily install the AnyConnect using the following instruction:
Let me rephrase that. I was always able to install the client but constantly received a server certificate error. I tried to import the certificates, but no dice. These instructions fixed that problem.
Install, or verify installed, the following packages:
Create the directory /usr/local/firefox and create symlinks for the following files: /usr/lib32/libnss3.so, /usr/lib32/libplc4.so, /usr/lib32/libnspr4.so, /usr/lib32/libsmime3.so, and /usr/lib32/nss/libsoftokn3.so.
You may need to reboot or run ldconfig so the symlinked libraries can be found.
Go to the directory where you have the AnyConnect software
sudo apt-get install ia32-libs lib32nss-mdns libcurl3 libxml2 cd /usr/local sudo mkdir firefox cd firefox sudo ln -s /usr/lib32/libnss3.so sudo ln -s /usr/lib32/libplc4.so sudo ln -s /usr/lib32/libnspr4.so sudo ln -s /usr/lib32/libsmime3.so sudo ln -s /usr/lib32/nss/libsoftokn3.so sudo ldconfig
Untar the AnyConnect client file and run
The GUI client is automatically installed under Applications -> Internet.
sudo sh ./vpn_install.sh