Original repository is here.
I added a script for firewall-cmd
IPsum is a threat intelligence feed based on 30+ different publicly available lists of suspicious and/or malicious IP addresses. All lists are automatically retrieved and parsed on a daily (24h) basis and the final result is pushed to this repository. List is made of IP addresses together with a total number of (black)list occurrence (for each). Greater the number, lesser the chance of false positive detection and/or dropping in (inbound) monitored traffic. Also, list is sorted from most (problematic) to least occurent IP addresses.
As an example, to get a fresh and ready-to-deploy auto-ban list of "bad IPs" that appear on at least 3 (black)lists you can run:
curl --compressed https://raw.githubusercontent.com/stamparm/ipsum/master/ipsum.txt 2>/dev/null | grep -v "#" | grep -v -E "\s[1-2]$" | cut -f 1
If you want to try it with ipset, you can do the following:
sudo su
apt-get -qq install iptables ipset
ipset -q flush ipsum
ipset -q create ipsum hash:net
for ip in $(curl --compressed https://raw.githubusercontent.com/stamparm/ipsum/master/ipsum.txt 2>/dev/null | grep -v "#" | grep -v -E "\s[1-2]$" | cut -f 1); do ipset add ipsum $ip; done
iptables -D INPUT -m set --match-set ipsum src -j DROP 2>/dev/null
iptables -I INPUT -m set --match-set ipsum src -j DROP
If you want to try it with firewall-cmd ipset, you can create ipsum.sh script:
#!/bin/bash
firewall-cmd --permanent --delete-ipset=ipsum-blacklist
#create new ipset
firewall-cmd --permanent --new-ipset=ipsum-blacklist --type=hash:net
#load and add IPs into ipset
for ip in $(curl --compressed https://raw.githubusercontent.com/stamparm/ipsum/master/ipsum.txt 2>/dev/null | grep -v "#" | grep -v -E "\s[1-2]$" | cut -f 1); do firewall-cmd --ipset=ipsum-blacklist --add-entry=$ip --permanent; done
#firewall-cmd rules
firewall-cmd --permanent --zone=public --remove-rich-rule='rule family="ipv4" source ipset="ipsum-blacklist" drop'
firewall-cmd --permanent --zone=public --add-rich-rule='rule family="ipv4" source ipset="ipsum-blacklist" drop'
#firewall-cmd reload and apply rules
firewall-cmd --reload
and add the script call into /etc/crontab
5 5 * * * root /path/to/ipsum.sh save > /dev/null