Re:What SSH Hacking Attempts Look Like
by lakechfoma on Saturday May 05, 2018 @09:32AM
(#17001714)
Not with single packet authentication from fwknop
http://www.cipherdyne.org/fwknop/docs/fwknop-tutorial.html#w...
fwknop has a cache to prevent replay attacks, that plus the fact the packets are only valid for a certain length of time pretty much thwarts this. Remember, fwknop is _in addition_ to your existing security practices, it is not the only "password."
"A port knock is just a clear password"
It is only clear to the routers in your traceroute ... third party attackers cannot snoop on this traffic.
I much prefer restricting port 22 to a few ip and disable passwords