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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!

Category:Open DNS Resolvers: Difference between revisions

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autoreview, Bureaucrats, editor, Interface administrators, reviewer, Administrators
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==What if I run a DNS server on purpose?==
==What if I run a DNS server on purpose?==



It is quite legitimate for people to run DNS servers on their Network - in these cases access to them should be restricted or limited.
It is quite legitimate for people to run DNS servers on their Network - in these cases access to them should be restricted or limited.
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If you run an Authoritative DNS server, configure it only to return records for your domain.
If you run an Authoritative DNS server, configure it only to return records for your domain.


If you run a Caching resolver, configure it to only return records for your users (firewall to only allow your users).
If you run a Caching resolver, configure it to only return records for your users (firewall to only allow your users), and consider implementing rate-limiting.


=How to prevent this?=
=How to prevent this?=
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