Fritz!Box 7390 behind firewall
How to setup a Fritz!Box 7390 for VoIP behind a Netgear UTM, which is connected to a Cable modem.
Shows 2 telephone numbers enabled. One landline and other VoIP.
The challenge was how to allow the LAN connected computer to log into the Fritz, but still be protected by the Netgear UTM/Firewall. This solution places the Fritz in parallel to the firewall, but with DHCP turned Off on the Fritz. The firewall has DHCP enabled, and is the gateway for all PCs (and Macs).
Both the Fritz and the Firewall plug into a cable modem/router. The LAN subnet on this site is 192.168.64.xxx
The Fritz setup is shown below...
It is also quite workable to put the Firewall behind the Fritz and then PC's would log into the Fritz via the firewall. Downside is that we would have triple NAT-ted our PC connections, with possible performance downgrade.
Konzeption und technische Realisierung: intwerb.de