[CentOS] Crashing Nameservers

Sat Dec 31 09:44:19 UTC 2005
Maciej Żenczykowski <maze at cela.pl>

iptables -I INPUT 1 -s bad.ip.number.here -j DROP

> Seems I'm experiencing a DoS against vsftp login. Anybody got a good way to 
> limit the number of failed login attempts by one IP address?