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- A router upstream from the Unified Firewall establishes the Internet connection. It has the public IP address 81.818181.81.1. The public IP address is linked with the DNS name server.lancom.de.
- The Unified Firewall and the upstream router are both members of the intermediate network 192.168.0.0/24. In this network, the Unified Firewall has the IP address 192.168.0.254.
- A web server on the local network of the Unified Firewall has the IP address 192.168.1.100 and is reached from the Internet via HTTPS.
- A computer on the local network with the IP address 192.168.1.55 needs to access the web server on the local network using the DNS name server.lancom.de.
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- Set the NAT / Masquerading to the option left-to-right.
- Activate the option Enable DMZ / Port Forwarding for this service.
- Under External IP address, enter the WAN IP address of the Unified Firewall (in this example the IP address 81.81.81.1).
1.5.) Click on Save.
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