Is it ok to downgrade openssh from 5.3 to 4.3 in rhel6 as we are facing compatibility issue between openssh 3.1 client and openssh 5.3 server(SCP file transfer hangs).
Please we cannot upgrade openssh 3.1 due to some other reason.
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I would not recommend downgrading the distribution OpenSSH version shipped with RHEL6. There are dependencies that would potentially break your server. So no, it's probably not okay...
We can possibly help you troubleshoot the client's