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About This Document >>     Installing SSH Tectia Server for IBM z/OS >>     Getting Started with SSH Tectia Server for IBM z/OS >>     Configuring the Server >>     Configuring the Client >>     Authentication >>     Transferring Files >>     Tunneling >>         Local Tunnels >>         Remote Tunnels             Examples of Remote Tunneling         Tunneling FTP >>         Agent Forwarding     Troubleshooting SSH Tectia Server for IBM z/OS >>     Advanced Information >>     Man Pages >>     Log Messages >>

Examples of Remote Tunneling

This section shows an example (SSZJTUNN from SAMPLIB) of creating tunnels for connecting to a database server.

1. The TUNNEL1 step opens two remote and two local tunnels.
2. The DBPROC step runs a ficitional database replication command.
3. The SSH2STOP step closes the tunnels and the ssh2 connection.

The remote database server must have a Secure Shell server running and non-interactive authentication must be set up and enabled.

When adapting the example to real life, note that the local port number used for the secure listener must be unique for each instance of the script which can get run concurrently.

// JCLLIB ORDER=&SYSUID..SSZ.SRVR542.SAMPLIB //* //TUNNEL1 EXEC SSZP //SYSTSIN DD * %SSZRSSH -S -f + -oPidfile=/tmp/my_ssh2.pid + -R 2345:localhost:2345 + -R 2346:localhost:2346 + -L 3456:localhost:3456 + -L 3457:localhost:3457 + username@remote_db_server //* //DBPROC EXEC DBPROC, // SERVER=LOCALHOST, // ACTION=REPL //* //SSH2STOP EXEC PGM=BPXBATCH, // REGION=0M, // TIME=100, // PARM='SH kill `cat /tmp/my_ssh2.pid`' //STDOUT DD PATH='/tmp/&SYSUID.-SSH2STOP.out', // PATHOPTS=(OWRONLY,OCREAT,OTRUNC), // PATHMODE=(SIRUSR,SIWUSR) //STDERR DD PATH='/tmp/&SYSUID.-SSH2STOP.err', // PATHOPTS=(OWRONLY,OCREAT,OTRUNC), // PATHMODE=(SIRUSR,SIWUSR) /*