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root access

Allow UID 0 accounts to login but not root over SSH

Introduction

More than once, I've needed root access to a server over SCP.  As we all know, allowing SSH access with the root user is a blaring security hole because the user is a well-known userid with superuser access. This makes it the first thing that a hacker or script-kiddie will check.  If you create another user with userid number 0 and set PermitRootLogin to 'no' in the sshd_config file, you will still not be able to login.  The PermitRootLogin option actually blocks ANY user if their user id number equals 0.

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