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List:       gentoo-user
Subject:    Re: [gentoo-user] Locking down a user with a shell account and SSH access
From:       Grant <emailgrant () gmail ! com>
Date:       2013-07-02 6:33:38
Message-ID: CAN0CFw1jGuJ_N+5WEM5yWFspYFadVAxRAtUpzxFGXEsV1YZxOg () mail ! gmail ! com
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>> My backup user needs a shell on the backup server in order to execute
>> rsync and needs to be included in /etc/ssh/sshd_config AllowUsers in
>> order to SSH in.  My authorized_keys file is locked-down.  The second
>> field for the user in /etc/shadow is an exclamation point which I
>> think means the user can not log in with a password.  Should I take
>> any additional steps to prevent that user from logging in and not
>> being subject to the authorized_keys restrictions?
>
> What about "PasswordAuthentication no"?

Can that be set for a single user?  I have a normal user who needs to
log in via SSH with a password and a backup user who only needs to run
rsync via SSH keys.  If not, does the exclamation point in /etc/shadow
prevent the user from logging in without the SSH key?

- Grant

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