For a custom application (retrieving data from embedded sensors), I need to create a fake DNS entry to redirect the requests to my servers.
I want to setup a DNS server so the users just have to change their routers DNS settings for joining.
I need to have a public DNS server. I cannot have a client filter since some clients IP are dynamic. So it must be open to everybody.
I think dnsmasq can do the work.
What dnsmasq settings should I take care of for making sure I'm not making a gateway for dns amplification and other attacks ?