A customer asked us to put on a DNS Resolver for its network.
What he requests is: A list of allowed domains (white list) that the dns resolver can answer (anche cache) Any other domains outside the whitelist must return a invalid dns record.
This is to allow access from his network to only few domains and block any other domains.
What software can i use? I have see powerdns recursor can be used with lua scripts but before try this way i ask if there is something already cooked...
Thank you Francesco