Using TN3270 and TN5250 Through a Firewall

  1. Configure a session using the following settings:

Host name
Name or IP address of the firewall
Connection
Telnet
Emulation
TTY
Telnet terminal type
The IBM 3270 or 5250 mode
Valid IBM3270 and 5250 modes include: IBM-3278-2, IBM-3278-3, IBM-3278-4, IBM-3278-5, IBM-3179-2, IBM,3477-FC.

  1. On the File menu, click Save Session or Save As to save the configuration.

  2. Connect to the firewall using the configuration you created in steps 1 and 2.

  3. When the firewall prompts for the host, enter the name or IP address of the destination host.

  4. You might have to type ENTER once to display the destination host’s initial screen.

Note The TinyTERM program senses Telnet binary mode to know when to switch emulations from TTY to the IBM emulation you entered in the Telnet terminal type box.

Note Do not save the session after connection to an IBM 3270 or 5250 host or you will lose the TTY session configuration. The TinyTERM program changes your session properties when it connects to the IBM host.