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This is the support site for Andrews & Arnold Ltd, a UK Internet provider. Information on these pages is generally for our customers but may be useful to others, enjoy!

Stopping Open DNS - Billion: Difference between revisions

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[[File:Billion_dns_filter1.jpg|400px]]
[[File:Billion_dns_filter1.jpg|400px]]

*Then re-test from the Control Pages: https://clueless.aa.net.uk/dnsresolvers.cgi


Please note that on these routers this does not prevent the router's internal resolver from doing the DNS lookup itself. This isn't usually a problem, but due to recent DNS amplification attacks sometimes lookups have continued after fixing the original problem. To prevent this add a rule blocking DNS *from* the router's WAN IP *to* port 53. This will prevent usage of the router as the LAN's DNS resolver.
Please note that on these routers this does not prevent the router's internal resolver from doing the DNS lookup itself. This isn't usually a problem, but due to recent DNS amplification attacks sometimes lookups have continued after fixing the original problem. To prevent this add a rule blocking DNS *from* the router's WAN IP *to* port 53. This will prevent usage of the router as the LAN's DNS resolver.





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