Asus AM604g - Manual (Page 57)

Access Control
You can enable or disable some services of your router by LAN or
WAN. If no WAN connection is defined, only the LAN side can be
configured.
Services
Services that can be enabled / disabled on the LAN / WAN are
FTP, HTTP, ICMP, SNMP, SSH, Telnet, and TFTP.
IP Addresses
Web access to the router can be limited when Access Control
Mode is enabled. The IP addresses of allowed hosts can be
added using Access Control IP Address. →
Add the IP address to the IP address list by clicking on the Add
button, then select “Enabled” to enable Access Control Mode.
ASUS 4-Port Wireless Ethernet Router
User Manual
56
Version 1.0
Document #: BD-AU0014-10