So I have an OpenSSHD on an Ubuntu machine using static IP address.
My notebook PC has dynamic IP address -> "I mean really dynamic", so there couldn't be any ranges specified...
I need to restrict the SSHD to only show that it's there to my notebook (so no one else could see that there is an sshd listening on some port, only me).
I'm thinking about knockd (It's really simple to implement). Are there any solutions?