is necessary to have internet to let the server running?

[hednyl]

is necessary to have internet to let the server running?
or I can use it on a network offline?

 

[Vormav]

Not external. But you need internal network like TCP protocols so PT can communicate with server. Also SQL server communicate with PT using TCP/IP.
So no you don't need "internet" (google, 4chan etc.).

 

[hednyl]

Oh Thanks..