[tor-relays] Port knocking for SSH on a Tor node

[goll]

On Tue, 3 May 2016 15:58:22 +0200
Cristian Consonni <kikkocristian at gmail.com> wrote:

> Hi,
> 
> I am putting together a blog post with tips and tools for
> administrating a node and then I have discovered the technique of
> "port knocking".
> 

Have you looked into Single Packet Authorization?

http://www.cipherdyne.org/fwknop/

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