The Samba suite is a set of programs which run under the FreeBSD
operating system. These programs deliver most of the important
functionality of a Microsoft Lan Manager server. That is, they support
remote access to FreeBSD filespace and FreeBSD printers from Lan Manager
compatible clients. In practical terms, this means that such clients
can connect to and use FreeBSD filespace as if it was a local disk drive,
or FreeBSD printers as if they were local printers.

Some of the most popular Lan Manager compatible clients include Lan
Manager itself, Windows for Workgroups, OS/2 and Windows NT.

Please note that if you want to use Windows NT 4.0 + Service Pack 3
or above as clients, you have to use -des version of samba ports.
-des version is not redistributable as a binary package because of 
the export control of US.  Please type make install at net/samba-des 
in ports collection.