How to connect to router's admin page through a second router?

Question

I have a private network setup of 192.168.1.1 I have connected one of LAN ports of this router to WAN port of a second router that I use for the guest router. the second router has IP Address of 192.168.0.1 for the lan side and 192.168.1.156 is the WAN IP.

When I want to reach my guest router from the LAN side of my private network "192.168.1.1" I am not able to do it. I enabled remote management and the ability to ping the router and the best I could do was to ping "192.168.1.156" from LAN side of my private router's network.

For management reasons, I need to be able to connect to the guest router's interface from any computer located on my private network. How can I allow my first router to reach the admin page of the guest router?

My guest router is Netgear R7000P

please see the network diagram for clarification:

Answer 1

I'm not sure I understand the connection of the second router 192.168.0.1 WAN ip, does that mean you plugged the cable into the wan port? If that's it, you have to put it in a LAN port because it's a client of 192.168.1.1 (in dmz I guess).

Answer 2

The fact that you can enter the admin page from the 192.168.0.x network only means that it is accessible.

To access it from 192.168.1.x, you must enable Remote Management. This gives you the ability to access your router from outside its sub-network in order to view or change its settings.

The manual for the Nighthawk R7000P specifies this for "Remote Access" on page 88.

Do this from the 192.168.0.x network segment:

To set up remote management:

1. Launch a web browser from a computer or mobile device that is connected to the network.
2. Enter http://www.routerlogin.net in the address field. A login window opens.
3. Enter the router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home page displays.
4. Select ADVANCED > Advanced Setup > Remote Management. The Remote Management page displays.
5. Select the Turn Remote Management On check box.
6. In the Allow Remote Access By section, specify the external IP addresses to be allowed to access the router’s remote management. Select one of the following:
   • Only This Computer. Allow access from a single IP address on the Internet. Enter the IP address to be allowed access.
   • IP Address Range. Allow access from a range of IP addresses on the Internet. Enter a beginning IP address and an ending IP address to define the allowed range.
   • Everyone. Allow access from any IP address on the Internet.
7. Specify the port number for accessing the web management interface. Normal web browser access uses the standard HTTP service port 80. For greater security, enter a custom port number for the remote web management interface. Choose a number from 1024 to 65535, but do not use the number of any common service port.The default is 8443, which is a common alternate for HTTP.
8. Click the Apply button. Your settings are saved.