nanog mailing list archives

Re: de-peering for security sake


From: Jared Mauch <jared () puck nether net>
Date: Sat, 26 Dec 2015 16:21:03 -0500


On Dec 26, 2015, at 11:14 AM, Joe Abley <jabley () hopcount ca> wrote:

With respect to ssh scans in particular -- disable all forms of
password authentication and insist upon public key authentication
instead. If the password scan log lines still upset you, stop logging
them.

Or if you can’t get users to use keys (aside from remove the users) consider things like:

example /etc/ssh/sshd_config
Match User root
        PasswordAuthentication no

for users that should not be permitted to fall-back to password authentication.

- Jared



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