iptables 中 ip 通配符的设置案例

192.68.1.1/32 means ONLY address 92.168.1.1
192.168.1.0/24 means every address from 92I68.0 to 192.168.1.255
192.168.0.0/6 means every address from 92.68.0.0 to 192.68.255.255
192.0.0.0/8 means every address from 192.0.0.0 to 192.255.255.255
0.0.0.0/0 means every possible IP address from 0.0.0.0 to 255.255.255.255