I have an interesting problem or issue and need assistance on keeping this from happening again.
We have a server named "APPLE"
Apple is a nix server, but there is a A record in DNS the apple.
Everything was working fine, until a contractor with a computer named APPle attached to our network... Since it connected via wireless with the credentials it was able to connect.
It got its IP address from DHCp.... I am guess dhcp or whatever updated A record with his address...
(1) our DNS is set for secure and dynamic updates... what do I need to do to keep this from happening now or in the future..... Since I wont know all the computer names of unknow personel connecting to our network...
Also need best practices on hardening DNS... any docs, step by step would be greatly appreciated.