Asus DSL-N12HP User Manual page 41

Enable Enhanced IGMP: Enable by ticking the checkbox. IGMP
packets between LAN ports will be blocked.
Enable LAN side firewall: Enable by ticking the checkbox.
DHCP Server: To enable DHCP, select Enable DHCP server and
enter Start and End IP addresses and the Leased Time. This setting
configures the router to automatically assign IP, default gateway
and DNS server addresses to every PC on your LAN.
Setting TFTP Server: Enable by ticking the checkbox. Then, input
the TFTP server address or an IP address.
Static IP Lease List: A maximum of 32 entries can be configured.
To add an entry, enter MAC address and Static IP address and then
click Apply/Save.
To remove an entry, tick the corresponding checkbox in the
Remove column and then click Remove Entries.
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