Re:Show HN: TOTP Based Port Knocking -- two factor firewall
by dhj on Wednesday May 17, 2017 @02:23PM
(#14361252)
> If you're getting lots of random IPs
That is the problem, it always seems to be random IPs. Thats why failtoban is a losing battle. Failtoban works per IP, but no matter how sensitive the ban rule there always seems to be an endless supply of new IPs.
I do use keys for ssh access so disabling passwords does cover most of the safety concern. I guess it is more of an annoyance than anything. It looks huge in the logs, but network usage wise it probably boils down to once every few minutes.
That is the problem, it always seems to be random IPs. Thats why failtoban is a losing battle. Failtoban works per IP, but no matter how sensitive the ban rule there always seems to be an endless supply of new IPs.
I do use keys for ssh access so disabling passwords does cover most of the safety concern. I guess it is more of an annoyance than anything. It looks huge in the logs, but network usage wise it probably boils down to once every few minutes.