Fail2ban
From Leo's Notes
This page was last edited on 11 August 2017, at 21:13.
Fail2Ban is a program that monitors failed login attempts and automatically blocks access.
Installation
On Fedora, install the fail2ban package.
Configuration
Make any changes to /etc/fail2ban/jail.local. The default settings and the configuration documentation can be viewed at /etc/fail2ban/jail.conf.
I am currently using the following configuration:
[DEFAULT]
#
# Ban hosts in seconds
#
# One month
bantime = 2592000
# Override /etc/fail2ban/jail.d/00-firewalld.conf:
banaction = iptables-multiport
ignoreip = 127.0.0.1/8 172.20.1.0/24 96.30.20.0/24 67.227.194.37/23
# 12 hours, 3 fail
findtime = 43200
maxretry = 3
[sshd]
enabled = true