diff --git a/sources/tech/20171002 Three Alternatives for Enabling Two Factor Authentication For SSH On Ubuntu 16.04 And Debian Jessie.md b/sources/tech/20171002 Three Alternatives for Enabling Two Factor Authentication For SSH On Ubuntu 16.04 And Debian Jessie.md
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 Three Alternatives for Enabling Two Factor Authentication For SSH On Ubuntu 16.04 And Debian Jessie
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 Security is now more important than ever and securing your SSH server is one of the most important things that you can do as a systems administrator. Traditionally this has meant disabling password authentication and instead using SSH keys. Whilst this is absolutely the first thing you should do that doesn't mean that SSH can't be made even more secure.