TN5250 is a protocol that allows users to access AS/400 systems over a TCP/IP network using an appropriate TN5250 client terminal emulator. The TN5250 Service provided with SNA Server enables any TN5250 client to connect to the AS/400 by means of SNA Server without installing or configuring TCP/IP on the AS/400. Full 5250 terminal emulation functions are supported by the service, as well as hot backup and security features similar to those provided with the TN3270 service.
Figure 6.6 TN5250 service model.
To provide TN5250 access, you need to define local and remote APPC LUs, a mode, an AS/400 user name and password, a terminal type, and, optionally, an IP address and subnet mask.