Configure the Telnet server

This topic shows you how to configure your Telnet server for various emulation types.

One of the most important Telnet functions is its ability to negotiate options between the client and the server. This type of open negotiation makes it possible for either the client or the server to initiate or to honor a request. Several different emulation types are available to you for negotiating requests and converting them to output. The iSeries™ server can support 3270-type workstations and VTxxx workstations, but the preferred type is 5250 emulation.

To configure your Telnet server for use with one of the other emulation types supported, complete the following children linking tasks that contain task steps.

After you have configured Telnet, you may want to Secure Telnet with Secure Sockets Layer (SSL).

  1. Start the Telnet server
    Use this topic to learn the steps for starting the Telnet server.
  2. Set the number of virtual devices
    You can read this topic for instructions on configuring the number of virtual devices for the Telnet server and limiting the number of signon attempts allowed.
  3. Restrict privileged users to specific devices and limit sign-on attempts
    The sign-on system values are used to both restrict or limit the devices to which a user can sign on and to define the number of system sign-on attempts allowed.
  4. Set the session keep-alive parameter
    You can set the maximum idle time that the TCP protocol will allow before sending a probe to test for an inactive session using the TCP keep-alive parameter.
  5. Assign devices to subsystems
    Before a user can sign on to the iSeries server, the workstation must be defined to a subsystem. The workstation, for example, will be the virtual display device that is selected or automatically created by the Telnet server.
  6. Activate the QSYSWRK subsystem
    The server job for a TCP/IP application must start in the QSYSWRK subsystem. The spooling subsystem, QSPL, needs to be active to run printer pass-through sessions.
  7. Create user profiles
    On the Telnet server, you can create Telnet user profiles using iSeries Navigator.
  8. iSeries supported emulation types
    The preferred emulation for the iSeries is 5250 emulation. However, the iSeries also supports 3270 and VTxxx emulation.
  9. Secure Telnet with SSL
    With the Secure Sockets Layer (SSL) protocol, you can establish secure connections between the Telnet server application and Telnet clients that provide authentication of one or both endpoints of the communication session. SSL also provides privacy and integrity of the data that client and server applications exchange.
Parent topic: Telnet
Related concepts
Telnet scenario: Telnet server configuration