[Bug 248923] .ssh/authorized_keys2 working accoding to response to a previous PR

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 08 Sep 2021 01:42:03 UTC

--- Comment #2 from Ed Maste <emaste@freebsd.org> ---
As far as I can tell your example functions as expected: you cannot connect
with keys in .ssh/authorized_keys2, and can with keys in .ssh/authorized_keys.

Again, from sshd(8):

>     AuthorizedKeysFile specifies the files containing public keys for public
>     key authentication; if this option is not specified, the default is
>     ~/.ssh/authorized_keys and ~/.ssh/authorized_keys2.

But the option *is* specified in the default /etc/sshd_config file:

# The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2
# but this is overridden so installations will only check .ssh/authorized_keys
AuthorizedKeysFile      .ssh/authorized_keys

If have no AuthorizedKeysFile setting in your sshd configuration the
compiled-in default is ~/.ssh/authorized_keys and ~/.ssh/authorized_keys2. If
you *do* have an AuthorizedKeysFile in your sshd configuration
(/etc/ssh/sshd_config) that takes precedence over the default compiled into

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