Rob Kampen schrieb:
Not really protection - rather a deterrent - it just makes it slower for the script kiddies that try brute force attacks - they have to pace themselves to one try per minute rather than one or two per second. Thus they normally move on to an easier target. You can also use iptables to allow say four attempts from an IP and then block for 5 or more minutes - this is what I use.
Not really, either ;-) Brute-forcing has long-since started to go distributed, fooling fail2ban and similar scripts with just 3 or 4 checks per single source-host.
The bad guys do cloud-computing, too....
Rainer