Hello everyone, have you had any experiences with firewalls that haven't received updates for a very long time? I now have the task of updating a very old Sophos UTM 9, which is running version 9.111. Unfortunately, it's not possible to replace the firewall with a new one overnight, so I want to install the latest updates first.
My first step is to fully back up the firewall. It's possible that old techniques are now implemented differently, so I would like to be able to restore the entire firewall with the old version if necessary.
Are there version jumps that I need to be aware of?
Thank you.
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