Use an external firewall with the Nighthawk X6S

[thmspl]

I would like to install a WatchGuard firewall as an external firewall alongside my Nighthawk X6S.

Where can I configure this in the Nighthawk admin gui?

[plemans]

You'd need to contact watchguard firewall on how to setup their product. 

[thmspl]

Sorry, I wasn't exact enough. I mean as far as I put the router into my network I need to tell the Nighthawk about the external firewall to be sure, that everything is running through the firewall including wifi and other stuff. Where can I do this?

[plemans]

Without knowing exactly what your firewall does/controls, its tough for us to tell you exactly how to setup your router. 

its why I'd contact the specific firewall company to see what they'd recommend. 

I see they have a support number and support forums. I'm sure on there they have instructions on connecting your router to the firewall in the appropriate setup. 

I'd imagine it has its own dhcp so you'd put the netgear in access point mode, but without knowing their specific setup, its tough for us to tell you.