topic Network down while executing rsh in Operating System - Linux

Network down while executing rsh

Lee Chin Ken — Tue, 31 Mar 2009 14:05:53 GMT

Hi,

I am currently configuring 4 node VCS cluster running on CFS on HP BL680 G5 server with Rhel4U5.

But now I am facing problem where I need to allow RSH ( I know rsh is not secure ) from one server to another. But whenever I execute rsh <> ls -al /tmp. The target server network will be down.

Do you all have any idea? You input is really welcome.

Regards,
Ken

Re: Network down while executing rsh

Ivan Ferreira — Tue, 31 Mar 2009 14:43:05 GMT

>>> I know rsh is not secure

Whell, there are oppinions about this. In fact, some systems like Solaris, claims that it prevents to send unecripted passwords over the network. Which I agree.

If you have control about the .rhosts files, then probably is not a security issue.

>>> The target server network will be down

Can you post the exact message that you get?

Also, please post the ouput of the following command:

chkconfig --list | grep rsh

Ensure that you already have rsh server installed.

Re: Network down while executing rsh

Steven E. Protter — Tue, 31 Mar 2009 15:05:58 GMT

Shalom,

rsh requires a working network. All you can do is use rsh to execute a script in the background before the network outage.

rsh hostname scriptname

scriptname includes:

command &

That backgrounds the command. Make that a second script that covers the whole process.

SEP