Communicating Over TCP/IP

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Communicating Over TCP/IP

You can use standard Microsoft networking commands, such as the NET USE command or NT Explorer, to connect to remote hosts if the following requirements are met:

Your computer and the remote host must be using the same transport driver (such as TCP/IP, IPX/SPX, or NBF).
The remote host must provide an SMB server, because the Workstation service in Windows NT communicates with an SMB (server message block—for an overview of SMB communications refer back to Chapter 7) server process.
The remote host must provide the standard suite of NetBIOS services as discussed in Chapter 7 NetBIOS over TCP/IP.

Effectively, connectivity using Microsoft networking is available when the remote host can provide the equivalent to a Windows NT Server service. To connect to resources on a remote system, you don’t need to change the configuration of the Windows NT system; however the remote computer needs to be configured to act as an SMB server on a protocol used by your Windows NT system.

This option provides the greatest degree of integration between Microsoft client computers and remote host systems. Many systems support connectivity through Microsoft networking. These include LAN Manager for OS/2, LAN Manager for Unix, DEC PATHWORKS and IBM LAN Server for OS/2. In cases where this is impossible, you have other options.

For file services, Windows NT includes several utilities, including an FTP client and server, a TFTP (Trivial File Transfer Protocol) client, and a RCP client. Third-party options also exist, such as NFS (Network File System) clients for Windows NT. Windows NT does not provide a TFTP server, and cannot accept Telnet sessions without third party utilities.

Printing services can also be provided, using the LPD/LPR print model. The LPD service can be run on Windows NT, and an LPR client is available with Windows NT.

Third-party utilities are available to provide an NFS (Network File System) server via a Windows NT server. These utilities can provide NFS services to PCs, Unix systems, or any other NFS client system. All standard Windows NT file systems are supported.

If the remote host system does not have an SMB client available, a series of TCP/IP utilities are available to connect between a remote host and a Windows NT computer. These utilities are discussed later in this chapter.

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