Whitelist all IP-address-like hosts names by default in checkHost

[orteth01]

the problem:

Essentially, users desire the ability to whitelist certain IP addresses so that colleagues can access their dev server to view their work. However, they'd prefer to not have to specify each individual allowed IP.

the solution from @edmorley:

"it should be safe to whitelist all IP-addresses-like hosts names by default, which would save people having to whitelist them manually."