Compare IP address to address group

You can compare IP addresses to an internal list of IP addresses. The script will return different results signifying whether the IP is in the list.

Compare an IP address to an address group:

when RULE_INIT{
--initialize the address group here
--for IPv4 address, mask can be a number between 0 to 32 or a dotted format
--support both IPv4 and IPv6, for IPv6, the mask is a number between 0 and 128
addr_group = "192.168.1.0/24"
addr_group = addr_group..",172.30.1.0/255.255.0.0"
addr_group = addr_group..",::ffff:172.40.1.0/120"
}

when HTTP_REQUEST{
client_ip = HTTP:client_addr()
matched = cmp_addr(client_ip, addr_group)
if matched then
debug("client ip found in address group\n");
else
debug("client ip not in address group\n");
end
}