SLES 11 includes an RSH server, it just doesn't install/enable it by
default.   Here's my notes on installing the inherently insecure rsh
server and its inherently insecure brethren.  The exact level of rsh
server may vary.


Note: our general practice is to NOT enable these because they are
inherently insecure, and the customer should be using ssh.
I think this is what is required, but haven't fully tested:
Check that the rsh-server rpm is installed:
 rpm -ihv rsh-server-0.17-25.3.s390x.rpm

Make sure that /etc/xinetd.d/rsh exists and has the disable yes changed to
no.
Make sure that /etc/xinetd.d/rlogin exists and has the disable yes changed
to no.
Make sure that /etc/xinetd.d/rexec exists and has the disable yes changed
to no.
Stop and start xinetd:
/etc/init.d/xinetd restart

Make sure that the userID under which the commands are to be run has an
appropriate /home/<userID>/.rhosts file.


Chuck Tribolet
[email protected] (IBM business)
[email protected] (Personal)
http://www.almaden.ibm.com/cs/people/triblet



From:   Tom Duerbusch <[email protected]>
To:     [email protected]
Date:   07/22/2011 10:36 AM
Subject:        VM to zLinux Remote Execution
Sent by:        Linux on 390 Port <[email protected]>



I'm trying to remotely execute a command with CMS as the client and SLES
11 SP 1 as the server.

All documentation I've found so far, shows how to do it from Linux to VM.

Apparently the problem is, TCPIP for VM only has the unsecured REXEC
client and SLES 11 only has a secured sshd.

I've searched the VM download page for a ssh client.
I've done some Linux searches for how to dumb down sshd (i.e. to allow
unsecured transfers).

Of course, there might be program products available, but unless they
would be zero cost products, it's not going to happen in the short term.

Thanks for any help

Tom Duerbusch
THD Consulting
(Still on z/VM 5.2)

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