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z/OS Access via TN3270, SSH, FTP

This document provides an introduction to accessing z/OS systems using TN3270, FTP, and SSH. It describes the 3270 protocol, how to configure and use a TN3270 emulator to access mainframe systems, and how to establish SSH and FTP connections. The objectives are to briefly explain 3270, and to learn how to connect to z/OS through TN3270 emulation, SSH, or FTP using the appropriate software, configuration settings, and credentials.

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157 views16 pages

z/OS Access via TN3270, SSH, FTP

This document provides an introduction to accessing z/OS systems using TN3270, FTP, and SSH. It describes the 3270 protocol, how to configure and use a TN3270 emulator to access mainframe systems, and how to establish SSH and FTP connections. The objectives are to briefly explain 3270, and to learn how to connect to z/OS through TN3270 emulation, SSH, or FTP using the appropriate software, configuration settings, and credentials.

Uploaded by

Klinsy Klinsy
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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z/OS Introduction and Workshop

TN3270, FTP, and SSH Access


Unit Objectives

After completing this unit, you should be able to:

• Briefly describe 3270

• Access z/OS using TN3270 Emulator

• Access z/OS using SSH

• Access z/OS using FTP


3270 Protocol
3270 is an IBM display device introduced in 1971
• Text only display
• Session attributes determine screen number of rows and columns
• Existed long before HTML and Browsers
• VT100 (text display) introduced in 1978

3270 protocol is a 'data stream' consisting of commands and orders to:


• Write data to display device
• Read data from display device

3270 Emulator Keyboard Mapping vs. PC Keyboard Layout


• 3270 protocol 'enter' command, x'7D', is used to send screen data
• PC keyboard right side 'Ctrl' is mapped by emulator to generate 'enter' command
• Emulator keyboard mapping can be changed
Physical Keyboard Layout & 3270 Emulator Mapping

Right side Ctlr key generates 3270 'enter' command by default


Emulator keyboard mapping can be changed
TN3270 Configuration
Customization Options
• IP address (target system) 192.86.32.67
• Port number (target system application) 23
• Model size (screen # rows and # columns)
• Code page (1047 recommended for USA)
• Keyboard Mapping
• Colors

How to configure is dependent upon specific TN3270 emulator


• TN3270 for Windows (many)
• TN3270 for Linux and MAC (x3270)

http://mtm2019.mybluemix.net/connectivity_guide/connectivity_guide_software.html

http://mtm2019.mybluemix.net/connectivity_guide/connectivity_guide_connection.html
TN3270 signon screen following successful configuration

'enter' command – right side Ctrl key


Cursor placed at bottom – ready for keyboard entry
Tab to Password field enter zfun
New Password required with verification

use tab key


TSO logon writes message to display device
TSO logon writes message to display device

when *** is displayed,


enter to proceed
TSO automatically starts ISPF

change settings
ISPF Settings
Before After

Return
Exit
F3
Program Function key display off, 'x' to terminate ISPF session,
then logoff of TSO
Before After
SSH connection
enter key is PC labeled enter key
use same TN3270 access assigned ID and your password (lowercase)
FTP connection

enter key is PC labeled enter key

use same TN3270 access assigned ID and your password


Unit Summary

Having completed this unit, you should be able to:

• Having completed this unit, you should be able to:

• Briefly describe 3270

• Access z/OS using TN3270 Emulator

• Access z/OS using SSH

• Access z/OS using FTP

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