Ok, sorry I messed it up.
DCPFlics is not TurboSquid's but Discreet Certified Plugin something.
Basically it's an old plugin platform for 3DsMax - most of the plugins still use it.
Instead of developing ways to register through a code, serial, license files for each plugin that gets produced all developers can use this system.
You don't have to worry about it, if you buy a plugin that uses it and install it, DCPFlics gets installed automatically.
Normally it's a little overkill since you install everything on one mashine, including DCPFlics, which then runs in the background as the license server, and in all plugins you set the plugin license server as the local host. So your single mashine keeps talking to itself
But this way only your mashine can use the license
Now if you install the DCPFlics server (from the installer of any of the plugins) on a separate mashine on your network that is always ON, and register the plugins using this server not the local ones (it's just a matter of entering a proper IP address instead of local host when the plugin asks you to register ) then all mashines on the network can use this license.
Rewinding a little bit - theoretically if you installed and registered locally on your mashine, all other mashines on the network can still use the license by connecting to YOUR mashine - this way your mashine becomes the license server. Problem is that from now on YOUR mashine will always have to be ON if you want to work on other mashines

If you turn it off, the DCPFlics server (the one on YOUR mashine offcourse) will no longer be responding, wright?
Try not to overthink it - it's really simple - I know, I've been through it just like you