FortiGate Firewall Setup Guide for Computer Internet Access

Connecting a local personal computer to the public internet through a FortiGate firewall requires setting up a dedicated firewall policy with precise network address objects and Network Address Translation enabled.

Network administrators must navigate to the Policy and Objects menu on the FortiOS dashboard and create a new firewall policy.

After defining an intuitive policy name, assign the local network interface connected to the workstation as the incoming interface and the internet service provider interface as the outgoing interface.

The video demonstrates how to configure a FortiGate firewall policy that allows a PC on a private LAN to access the public internet. It includes creating or selecting the PC address object, choosing the correct LAN and WAN interfaces, allowing traffic and enabling NAT.

To securely define the host computer, create a new address object within the source section using the exact local IP address with a thirty-two bit subnet mask.

Select this new object as the source, set the destination and service fields to allow all traffic, and ensure Network Address Translation remains enabled to convert private internal IP addresses into routed public IP addresses.

Once the policy is saved, administrators can test outbound connectivity via Internet Control Message Protocol ping requests and standard web browser traffic.

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