As you already know, the Microsoft ISA 2004 firewall is a stateful packet and application layer inspection firewall that is becoming increasingly popular among the security experts and corporate firewall administrators. They understand Microsoft ISA 2004 is the best security solution for Microsoft environments, and often for non-Microsoft environments. In this article I will show you the process you need to accomplish to configure site-to-site VPN between the ISA 2004 firewall and Checkpoint NG R55.
The ISA firewall can be configured to use strong, two-factor authentication to allow VPN clients access to selected network resources. When two-factor authentication with smart cards and the ISA firewall's stateful packet and application layer inspection engines kick in, you know you've got the best Firewall/VPN device you can get. Idan Plotnik shows you how to make it happen.