VPN Tracker is the leading Mac VPN client and compatible with almost all IPSec VPN gateways (Try VPN Tracker for free). Please refer to the following table to find out if the VPN Tracker team has already successfully tested VPN Tracker with your Cisco VPN gateway. If configuration guides are available for your Cisco VPN gateway, you'll find them here.
In case your Cisco IPSec VPN gateway is not in the list, there's a good chance that your Cisco VPN appliance will still work with VPN Tracker. The VPN Tracker manual has general configuration instructions.
Cisco Small Business and Linksys by Cisco devices can be found in the Cisco Small Business category
Additional configuration information for Cisco devices:
ISR 800 Series