Firewall rules for DrayTek Vigor 2860ac

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    rotblitz (Edited )

    Can you post a link to this other thread?

    Generally, if you block port 53 passthrough, you must ensure that the end user devices do not have any DNS server addresses configured which are not allowed by your firewall rule, because you do not want them being used.

    Some devices working and some others not indicates that these not working devices have DNS server addresses configured which you block by your firewall rule.  So, check and correct the network settings on these devices.

    Also, if you force all DNS traffic to OpenDNS, why do you introduce another rule to block port 53?  This looks rather redundant.

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