Anyways a better solution is to use a long wire. Plug the one end of the wire to a switch board nearby your place and one end to the cable of your router. Ask you friend to do this for you. Now you can turn off you router from the switch board near you.
Full Answer
How do I enable or disable remote access on my router?
To enable or disable remote access on your router using the Nighthawk app: Connect your mobile device to your router’s WiFi network. Enter your router’s admin password and tap the SIGN IN button. The dashboard displays. Tap the Menu icon located at the top left. Tap Settings>Remote Management.
How to enable remote management access to the Zyxel ATP/VPN series gateways?
This guide will help you enable remote management access to the Zyxel ATP/VPN series gateways to be able to access the configuration menu from the internet. Check the management port currently configured on the Zyxel appliance. To do this go to menu, Configuration () → System → WWW.
How do I enable remote access to the zywall/USG appliance?
Let's assume, for this example, your management port is 8443. Within the Service menu click Add to insert a new service entry. To enable remote access to the ZyWALL/USG series appliance, the remote management port service must be added to the Default_Allow_WAN_To_ZyWALL service group.
How do I change the management port on my Zyxel appliance?
Check the management port currently configured on the Zyxel appliance. To do this go to menu, Configuration () → System → WWW. If the management port is different from the default 443, a service will need to be created for this new management port number.
Verify Management Port
Check the management port currently configured on the Zyxel appliance. To do this go to menu, Configuration () → System → WWW.
Create Service
If the management port is different from the default 443, a service will need to be created for this new management port number. To create a service object for the management port number go to, Configuration () → Object → Service.
Edit Service Group
To enable remote access to the ZyWALL/USG series appliance, the remote management port service must be added to the Default_Allow_WAN_To_ZyWALL service group. To accomplish this go to menu, Configuration () → Object → Service and click on the Service Group tab. Find the "Default_Allow_WAN_To_ZyWALL" group entry and select it.
Step
The following steps are display based on the default setting of the device.
Verification
First, make sure the NBG-419N has already received WAN IP and it can access Internet.
Verify Management Port
Check the management port currently configured on the Zyxel appliance. To do this go to menu, Configuration () → System → WWW.
Create Service
If the management port is different from the default 443, a service will need to be created for this new management port number. To create a service object for the management port number go to, Configuration () → Object → Service.
Edit Service Group
To enable remote access to the ATP/VPN series appliance, the remote management port service must be added to the Default_Allow_WAN_To_ZyWALL service group. To accomplish this go to menu, Configuration () → Object → Service and click on the Service Group tab. Find the "Default_Allow_WAN_To_ZyWALL" group entry and select it.