Connecting a Netgear nighthawk behind a Sonic Wall 240

[networkmage]

Hello

I installed a Sonic Wall NSA 240 on my network and wanted to put my Netgear nighthawk router behind it so I have wireless capabilities. For some reason I am having a very difficult time with this. Here is my set up:

Now...I have a Netgear c3700 cable/modem/router combo as the home-access point which is in bridge mode to the Sonic Wall WAN port. I have the Sonic Wall LAN port connected to my main computer/workstation and this all works fine. So far all of this is just on Sonic Wall's default Gateway of 192.168.168.168 and basic default firewall rules. Nothing fancy set up or configured.

I added my Netgear nighthawk to the optimal LAN port on the sonic wall, configured nighthawk to static IP with DHCP set to OFF and rebooted router, and then my ISP said I had to use their newly issued private IP to prevent any conflict... via a pop up message (10.0.0.1). I made sure no Sonic Wall firewall rules stopped WLAN traffic, and added WLAN interface under Network in Sonicwall using the same gateway IP (192.168.168.168.

Bottom line it doesn't work at all and I am not able to log into the nighthawk router anymore using either 198.168.1.1 or 10.0.0.1...I'm totally lost now and obviously not a good network person. I've done this before on other sonic models and was successful but this one is more advanced.

I've tried connecting many devices with no success..and WIN diagnostics says I have DNS errors. But when I was in the routers interface..I set them to the same ones that SonicWall is on..and I can't find the login IP anymore because it changed, i've tried all common ones. I CAN log in my bridge router by typing 192.168.100.1 though...

Appreciate any help, thank you.

 

[jsmithepa]

TL;DR

Quick reply: Sonic Wall already doing NAT and your Netgear is NATing once again. Don't. Configure Netgear as Access Point. One FLAT subnet, that's normally what everybody should have.

 

[networkmage]

Yes, I the router interface login address changed but I found it from arp and switched to AP and it solved that, thanks.

But now I want to create a new private LAN with a different subnet on a second router coming off (behind) the LAN port of the SonicWall. I think I need to make the IP of the second router a static IP and turn off DHCP, right? How do I determine the new subnet and Stat IP for the router and also for the LAN connection interface on the sonicwall.

My default current IP with the SW for main host is 192.168.168.65 and Gateway is default of 192.168.168.168 (sonicwall)

Thanks!