DNS Filtering TL-ER6020 (block client manual DNS configuration)

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DNS Filtering TL-ER6020 (block client manual DNS configuration)

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DNS Filtering TL-ER6020 (block client manual DNS configuration)
DNS Filtering TL-ER6020 (block client manual DNS configuration)
2015-03-02 04:53:18 - last edited 2021-08-21 04:43:27
Region : UnitedStates

Model : TL-ER6020

Hardware Version : V1

Firmware Version : 1.0.3 Build 20140604 Rel.64661

ISP : Several (Cable, FIber, T3) dependent on location


I am wondering if there is a way to provide DNS filtering from this router.

What I am looking forward (I believe) is a way to block port 53 from my Internal LAN so that Internet clients cannot pull DNS information from the WAN side of the Internet.

Here is what I am trying to accomplish...

1. This is a shared Internet area with WiFi. I do not have control over the individual computers connecting.
2. We use corporate OpenDNS to filter access to sites which works great.
3. What I am want to do is eliminate the possibility of someone being able to manually enter a DNS on their individual system and bypass the OpenDNS filtering.

Is this possible on a TL-ER6020?

Thanks for any help/suggestions.

John
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Re:DNS Filtering TL-ER6020 (block client manual DNS configuration)
2015-03-03 08:32:18 - last edited 2021-08-21 04:43:27
I also sent an email to tech support regarding this and received this reply very quickly:

Thank you for choosing TP-LINK, This is Catherine from TP-LINK Technical Support.
From your description, i think what you need is to block the clients who use other DNS to access the internet.
So you can refer to the function 'Access rule'.
You need setup two rules for LAN.
First one, Allow the destination(DNS you want) from LAN to Any Source.
Second one, block Any destination from LAN to any source.


Big thanks to Catherine Duan - TP-LINK Technical Support

I have not tried this yet, but will the next time I get some testing time.

Please post if you have any solutions for this as well.
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