Locking Down DNS on MikroTik: How to Force Local DNS and Block Bypass Attempts
ID: e773a7ee-1cc2-5ce4-941f-bcf1b4f49899
STIX ID: report--e773a7ee-1cc2-5ce4-941f-bcf1b4f49899
Feed Name: Security Boulevard
A practical MikroTik RouterOS guide that outlines a three-step strategy to enforce network-wide DNS filtering: enable the router's local DNS resolver and redirect LAN DNS queries (UDP/TCP port 53) to the router via dst-nat; block DNS-over-TLS (DoT) on port 853 to force fallback to plain DNS; and mitigate DNS-over-HTTPS (DoH) by configuring upstream filtering providers to block DoH bootstrap domains and canary domains so browsers do not enable DoH.
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