One recommendation that I would look at would be open connect. I have used that at the last two companies to connect to ASA5520's running annyconnect. Works like a charm.
just install open connect and network-manager-openconnect and create a new vpn in your network interface management.
Just giving this as an alternative because I had major problems with the cisco client for linux.
Linking a site but just in case it goes by the way side I am coping the steps in here.
http://crashcourse.housegordon.org/OpenConnect.html
you may need to install additional repo's for this software
http://wiki.centos.org/AdditionalRes...ories/RPMForge
Code:
sudo yum -y install openconnect vpnc NetworkManager-openconnect