Fortigate VPN Lab – IPSec, VTI, GRE, BGP

This post is to summarize the steps how to create VPN tunnels using Fortigate.  Related Post:  Download and Launch Fortigate Virtual Machine in VMWare WorkStation Fortigate Diagram Ports for IPSec: UDP 500 and UDP 4500  Notes:  https://docs.fortinet.com/document/fortigate/7.4.0/best-practices/368512/ipsec-vpn https://docs.fortinet.com/document/fortigate/7.4.3/administration-guide/33578/configurable-ike-ports – if port 500 and 4500 blocked by ISP, you can enable NAT for other port, such […]