ipset

Create IP sets for firewall rules. More information: https://manned.org/ipset.

• Create an empty IP set which will contain IP addresses:

ipset create set_name hash:ip

• Destroy a specific IP set:

ipset destroy set_name

• Add an IP address to a specific set:

ipset add set_name 192.168.1.25

• Delete a specific IP address from a set:

ipset del set_name 192.168.1.25

• Save an IP set:

ipset save set_name > path/to/ip_set