https://www.voip-info.org/fail2ban-with-iptables-and-asterisk/
- /etc/init.d/fail2ban restart
- /etc/init.d/fail2ban reload
- /etc/init.d/iptables-persistent restart
When you reload or restart fail2ban all the bans are removed.
One problem with this wonderful solution (which is related to iptables, not fail2ban), is that when you reboot your server all the rules and blocked IPs are deleted. On my case I want all this IPs permanent, so to accomplish this you run.
# dpkg-reconfigure iptables-persistent
# iptables -S
And your rules will be maintained after reboot.
If you want to Flush the
# iptables -F
# /etc/init.d/iptables-persistent flush
To Save and Restore Iptables Persistent
# /sbin/iptables-save > /etc/iptables/rules.v4
# iptables-restore < /etc/iptables/rules.v4
Fail2Ban Database
# /var/lib/fail2ban
Fail2ban Filter Regex Tester
fail2ban-regex /var/log/mysql/error.log ".*@'<HOST>' \(using password: (YES|NO)\)*"
RESET COMMANDS FOR TESTING
/etc/init.d/fail2ban stop
rm -fr /var/lib/fail2ban/fail2ban.sqlite3
cat /dev/null > /var/log/fail2ban.log
/etc/init.d/fail2ban restart
/etc/init.d/fail2ban reload
fail2ban-regex /var/log/mysql/error.log /etc/fail2ban/filter.d/mysqld-auth.conf