How to secure SSH for Remote connections

This page summarizes the projects mentioned and recommended in the original post on /r/sysadmin

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  • putty-cac

    Windows Secure Shell Client With Support For Smart Cards, Certificates, & FIDO Keys

  • If you have smartcards or FIDO2 security keys (Yubikeys), consider using something like PuTTY CAC (https://github.com/NoMoreFood/putty-cac) to provide cheap and easy multi-factor authentication. With FIDO2, specifically, you can force the SSH server to only accept security keys by setting the only allowed authentication method to be [[email protected]](mailto:[email protected]).

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NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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