RHEL8: How to be able to connect using ssh to devices that have a RSA key generated with less than 1024 bits

Solution Verified - Updated -

Issue

  • Trying to connect to legacy network devices (e.g. switches) that use a RSA key with lower than 1024 bits fails from RHEL8 ssh clients

    $ ssh my-appliance
ssh_dispatch_run_fatal: Connection to XX.XX.XX.XX port 22: Invalid key length

Environment

  • Red Hat Enterprise Linux (RHEL) 8 and later
    • openssh

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