LibreNMS - snmp extend fail2ban
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Fail2ban LibreNMS script
Get the script and make it executable:
wget https://github.com/librenms/librenms-agent/raw/master/snmp/fail2ban -O /etc/snmp/fail2ban && chmod +x /etc/snmp/fail2ban
sudo Configuration
Adapt your /etc/sudoers with:
Debian-snmp ALL=(ALL) NOPASSWD: /etc/snmp/fail2ban
SNMP Configuration
Adapt your /etc/snmp/snmpd.conf with:
extend fail2ban /usr/bin/sudo /etc/snmp/fail2ban -c -U
Restart the service.
Crontab
Add to the crontab:
*/3 * * * * root /etc/snmp/fail2ban -u
Check Command
Adapt the user and path to your configuration:
sudo -u Debian-snmp /etc/snmp/fail2ban
In case of bug with the Perl @NIC, execute:
cpan JSON
Sources
