FortiGate to Cisco Router IPsec Tunnel Configuration Diagram #55635 (License: Personal Use)

This diagram illustrates a site-to-site IPsec VPN tunnel linking a FortiGate firewall and a Cisco router, with each device managing its own local subnet (192.168.161.0/24 and 192.168.151.0/24 respectively). The tunnel is established over private IP addresses 172.16.1.6 (FortiGate) and 172.16.1.5 (Cisco), representing the peer endpoints of the encrypted connection. The brick-wall icons denote security enforcement points, emphasizing perimeter protection in enterprise networking.

Used in technical documentation, network design guides, or cybersecurity training materials to explain how secure tunnels are configured between heterogeneous firewall/router platforms; matches user intent for learning, troubleshooting, or implementing cross-vendor VPNs.