Best way to block manual dns changes on devices

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tattoomees

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Best way to block manual dns changes on devices

« on: April 22, 2021, 06:09:10 pm »

Hi Is there a way control manually configured dns settings on devices , the adblock home works perfect but if i configure my laptop to use google dns instead opensense it passes all dns filtering.

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CJ

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Re: Best way to block manual dns changes on devices

« Reply #1 on: April 22, 2021, 06:19:23 pm »

You have to implement firewall rules to block any DNS requests to servers other than your own.

I talk about it in part two of the blog post I did for DNS security and ad blocking.

https://www.cjross.net/dns-security-and-adblock-with-opnsense-part-2/

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Have Answer, Will Blog

tattoomees

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Re: Best way to block manual dns changes on devices

« Reply #2 on: April 22, 2021, 06:38:21 pm »

Perfect it works like a charm

« Last Edit: April 22, 2021, 06:41:24 pm by tattoomees »

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