OpenDNS not working, after clearing the browser cache, restarting network card. (ISP's modem behind my router)

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cloufish

I'm using TL-WR841N (V11), here's manual to it -> https://www.tp-link.com/us/user-guides/tl-wr841n_v14/

I'm also using linux on my machine.

The router stays behind the modem which is protected by the random password of the ISP, but I've managed to configure my second router to use OpenDNS.

The main goal is to block youtube site and also youtube video media player with these domain names (it's not only for youtube)

This does not work however.

 

I've run several commands to test this:

$ nslookup  -type=txt  which.opendns.com.  208.67.220.220

```

208.67.220.220
Server:         208.67.220.220
Address:        208.67.220.220#53

Non-authoritative answer:
which.opendns.com       text = "r6.wrw1"

Authoritative answers can be found from:
```

$ nslookup youtube.com

```

;; connection timed out; no servers could be reached

```

So it works, but when I execute traceroute on the youtube dns

$ traceroute youtube.com

It forwards the request to the modem. Again - I do not have access to the modem's configuration panel.

In my router configuration panel I got Primary DNS and Second DNS set up to use the same OpenDNS IP, but the gateway is set to the modem's local IP.

Is there anything I can do other than changing the ISP? Also If there's anything more info I can provide please let me know, I'll do it!

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    cloufish (Edited )

    I contacted my ISP. They said that even If I had access to the administrative panel in the modem I couldn't change the DNS server, only the basic settings like SSID, enabled 2.4G / 5G Wi-Fi Networks, Wi-Fi password

    Also, now that I check to set this up on the Windows control panel, Internet Access is lost.

    When I set the 8.8.8.8 DNS server on the Windows machine's control panel, the issue disappears, but when I set the OpenDNS IP, it is lost as I said

    But, When I try to fix the internet connection and set the dns ip to 8.8.8.8 on the router, the issue is not fixed!

    Also, there's always an orange light signal on the router, even if the router settings doesn't point to OpenDNS:

    I slowly realize that It's not OpenDNS fault, but are there any hints I can get from you guys? :/ Is setting up Pi-Hole a working alternative?

     

    EDIT:

    After a Factory Reset, It seemed that Primary and Secondary DNS Servers were automatically assigned to:

    Are these the only ones accepted by the ISP modem? The light is now green!

    Then when I'm switching to another DNS I got no Internet :/ When I provide it on only Primary and left the Secondary untouched, then blocking with OpenDNS does not work

    And as I asked previously - Is there a way to talk this through and solve the problem with the ISP, or is changing ISP the only option?

    EDIT 2:

    I switched back to the Linux machine and taken a look into a resolv.conf file. It had following contents:

    is the dns address after 'search' keyword the actual dns that needs to be resolved from the default DNS Server? 

    PS. Changing nameserver's ip address results again with no Internet access

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    cloufish (Edited )

    SOLVED,

     

    The cause of this issue is that I was putting my own IP address (instead of OpenDNS nameservers - 208.67.222.222, 208.67.220.220) as my DNS Server.

    It's a really stupid mistake, sorry guys! 

     

    To be honest I don't know If I should delete this post. Maybe it'll become handy  for someone.

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