grant access to the web management interface by specifying a list specific IP addresses or ranges of IP addresses, both from WAN or from LAN. For example, entering "192.168.3.1" and "192.168.1.0/24" means that only the device at 192.168.3.1 and devices in the range of 192.168.1.0 to 192.168.1.255 are able to reach the web management interface.