Virtual Private Networking (“VPN”) is a cost effective and secure method for site to site connectivity without the use of client software. Fortinet Fortigate UTM appliances provide IPSec (as well as SSL VPN) “out of the box”. Specifically, IPSec Tunnels can be triggered via firewall rules based policies or interface mode. Interface mode is a more sophisticated and flexible method of providing connectivity between sites due in large part to its seamless integration into the Fortigate’s routing table.
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