26
significant bits in the last byte of IP address are unmask bits. Hosts within the subnet can do everything
(block nothing).
And others are all blocked.
Example
2:
(1.2.3.100/28): It stands for a subnet of IP address ranging from 1.2.3.96 to 1.2.3.111 and they can do
everything except read net news (port 119) and transfer files via FTP (port 21).
Others are all allowed.
After
Inbound Packet Filter
setting is configured, click on the
Save
button.
