port lockdown on GTM - do I have to include DNS ports?
I'd like to create custom port lockdown restrictions for a GTM to allow all hosts from my enterprise network and block management connection attempts from anywhere else. When I generate the lockdown list, do I need to explicitly whitelist DNS connections? Or will the GTM assume that since it's job is to be a DNS server, it should allow DNS by default without it needing to be explicitly allowed? Thanks!