guldener.net

1. Install some 32-bit libraries.
   (x)ubuntu
   sudo aptitude install ia32-libs lib32nss-mdns

   gentoo

   emerge ia32-libs lib32nss-mdns
2. Download cisco_opt.tar.gz (find below) and unpack it to /opt. After that you should have a directory /opt/cisco.
   
   wget http://guldener.net/sites/default/files/cisco_opt.tar_.gz
   tar -xzf cisco_opt.tar_.gz
   sudo mv cisco/ /opt/cisco
3. Now, in order to get the libraries needed, download firefox for 32bit:
   Download it from http://www.mozilla.com/en-US/products/download.html
   tar jxvf firefox-3.0.10.tar.bz2
   sudo mv firefox /usr/local/

   Copy or create symbolic links of some Firefox libraries required by the VPN client:

   cd /usr/local/firefox
   sudo cp libnssutil3.so /opt/cisco/vpn/lib/
   sudo cp libplc4.so /opt/cisco/vpn/lib/
   sudo cp libplds4.so /opt/cisco/vpn/lib/
   sudo cp libnspr4.so /opt/cisco/vpn/lib/
   sudo cp libsqlite3.so /opt/cisco/vpn/lib/
   sudo cp libnssdbm3.so /opt/cisco/vpn/lib/
   sudo cp libfreebl3.so /opt/cisco/vpn/lib/
4. Download vpn_client.tar.gz (find below) and run the vpn_install.sh.
   
   wget http://guldener.net/sites/default/files/vpn_client.tar_.gz
   tar -xzf vpn_client.tar_.gz
   cd vpn_client
   sudo sh ./vpn_install.sh

   Now you should find Cisco-Anywhere under "Applications -> Internet"

Source:
http://koroshiyaitchy.wordpress.com/2009/05/09/using-cisco-anyconnect-vp...