VPN Client and Certificate Authentication

[grobinson23]

Can someone tell me in what scenario would a person use Certificate Authentication in the VPN client? Preferably, version 4.8?

[vmoopeung]

Use the procedures in these sections to configure the VPN 3000 Concentrator and VPN Client Authentication with the use of the SC2 TM Apollo OS Smart Card

http://www.cisco.com/en/US/products/hw/vpndevc/ps2284/products_configuration_example09186a0080341625.shtml