Question Belkin AC1200FE Dual-Band Wireless Router F9K1123 v2 How do I get the DNS to work

Jul 25, 2025
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I was trying to get my Belkin Router to change its dns to Family shield DNS but when I try it didn't work, I found this router and connected it to my Eero just to make a new separate Wifi and after seeing posts it didn't work can someone help me out?

I tried but didn't work tried out Familysheild DNS, Cloudflare DNS, NextDNS
 
I was trying to get my Belkin Router to change its dns to Family shield DNS but when I try it didn't work, I found this router and connected it to my Eero just to make a new separate Wifi and after seeing posts it didn't work can someone help me out?

I tried but didn't work tried out Familysheild DNS, Cloudflare DNS, NextDNS
First. I would do testing with this router via a wired interface. Next, open a cmd.exe window and run ipconfig.exe /all
Verify that the LAN IP of the router (you would have to use the Belkin in a double NAT configuration) is the gateway and DNS IPs.
 
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Great news, it works now "YAY" but when I'm using Arc or Chrome it gives me this error

Your connection is not private​

Attackers might be trying to steal your information from www.exampleadultsite.com (for example, passwords, messages, or credit cards). Learn more about this warning


net::ERR_CERT_AUTHORITY_INVALID
But when I try Edge it perfectly works and states that its blocked.
So can you help me?
But also Chrome works sometimes and Edge does to.
 
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Great news, it works now "YAY" but when I'm using Arc or Chrome it gives me this error

Your connection is not private​

Attackers might be trying to steal your information from www.exampleadultsite.com (for example, passwords, messages, or credit cards). Learn more about this warning


net::ERR_CERT_AUTHORITY_INVALID
But when I try Edge it perfectly works and states that its blocked.
So can you help me?
But also Chrome works sometimes and Edge does to.
That's ad from VPN vendors

I would rathher use ad blocker extension that I can change settings on the fly instead using "family shield" DNS. Sometime "family shield" DNS blocks too much and some normal websites can't even load properly.
 
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I would start very simple.

Go into the pc nic setting and manually set the DNS ip address there. Start with the common ones like 1.1.1.1 and 8.8.8.8. Then look up the ip addresses of the dns servers you want to use and put those in.

This will eliminate the router as the cause of strange errors and purely be related to DNS servers.

Once you get his figured out and know the DNS servers will do the function you want you can set the router up. This is for devices where you can't really manually set the network settings.

You have 2 options. I recommend only using the first method but I will explain both.

The first one is to go into the DHCP setting on the router. There is a setting that sets the DNS server that the router tells the end devices to use.

The second one and unfortantly the way routers work by default is the router give the end device its IP as the DNS server. It acts as a proxy DNS server and then forwards the request on to the DNS server you set in the main router configuration. By default it will use the ISP DNS server. This is adding many extra layers to a fairly simple function and causes all kinds of strange issues. In addition this prevent the use of the somewhat new encrypted DNS function that is recommended.
 
The first option does not have any the DHCP doesn't say anything about dns so do you have any page or something to change?
 
So just now I have installed the CA certificate for the blocked page for Nextdns but wondering how I can do it for all devices, without manually going into the devices.
 
I see belkin has gotten much worse documenting things. They have always been a "value" router but I would think they have very common dhcp settings. Then again most people people will not read any kind of manual they just click on stuff. Not sure what to suggest its not like you are going to have setup videos on youtube for these low end routers.
 
I see belkin has gotten much worse documenting things. They have always been a "value" router but I would think they have very common dhcp settings. Then again most people people will not read any kind of manual they just click on stuff. Not sure what to suggest its not like you are going to have setup videos on youtube for these low end routers.
This is like a kids wifi I understand it's like a budget router but hey it's a router and it works how it's suppose to.