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

On Tue, 3 May 2016 15:58:22 +0200 Cristian Consonni <kikkocristian@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/