Fortigate Firewall GRE tunnel Configuration
Fortigate Firewall GRE tunnel Configuration: GRE (Generic Routing Encapsulation): > Encapsulation standard supported by almost all the major routing devices in the market > Creates a virtual P-2-P link > Encapsulate the original packet into GRE header/packet with respective GRE source and GRE destination (GRE endpoints) > Facilitate: i) Private to Private communication over public/private network ii) Private to Public communication over public/private network iii) Public to Public communication over public/private network > No encryption supported with GRE, however some of the customized proprietary GRE (for eg. customized GRE by HP), supports encryption as well Network Topology: Configuration Steps: 1) Configure WAN/LAN IP 2) GRE tunnel configuration 3) Point the interesting traffic to the GRE tunnel 4) Firewall Rules CLI: ##########IP configuration########## edit "port2" set vdom "root&quo