A TN3270 server is an interface between IP and SNA networks. End users in an IP network connect to the server, which is also a VTAM application. The TN3270 Telnet server runs in the TCP/IP address space as part of TCP/IP, and is started as part of the TCP/IP startup procedure.
As you proceed through the TN3270 Wizard, you will use the Next, Back and Finish buttons to proceed through a few basic panels where you will configure:
A group of SNA LUs that will be used to assign to TN3270 terminal clients.
The application access for the clients which includes choices for:
The TN3270 default solicitor panel, which will query the client asking for the application name, user id and password.
Sending a USSMSG10 to the clients.
Directly logging on to an application for full screen TN3270 clients.
Directly logging on to an application for line mode TN3270 clients.
Your SNA logmode choices for the various TN3270 device types. This will allow you the customize settings, such as the clients screen size.
This configuration will provide:
A default LU pool, which allows TN3270 terminal clients to connect to the server and establish SNA connectivity.
The ability for clients to access the desired SNA application directly or indirectly with the use of a USSMSG10.
The use of TCP port 23, from which the server will listen. Port 23 is the IETF well-known TN3270 port and the default for TN3270 clients.
The proper SNA logmode settings to allow for desired characteristics such as screen size.