Add IPv4 address
This options alows you to add an IP address/address range/subnet of a remote point for which the rule is to be applied. Internet Protocol version 4 is the older version, but still the most widely used.
Adds the IP address of an individual computer for which the rule is to be applied, for example 192.168.0.10
Enter the first and last IP address to specify the IP range (of several computers) for which the rule is to be applied, for example 192.168.0.1 to 192.168.0.99
Subnet (a group of computers) defined by an IP address and mask.