Operation Manual

Cerberus ADSL Wi-Fi Lite
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IP Filter
The Router provides extensive firewall protection by restricting connection parameters to limit
the risk of intrusion and defending against a wide array of common hacker attackers. Go to
Access Management → IP Filtering to set different IP filter rules of a given protocol (TCP,
UDP, or ICMP) and a specific direction (incoming, outgoing, or both) to filter the packets. IP
Filter is a more complex filtering tool, based more on IP and custom rules. Each of the indices
can hold six rules, and each interface can have four associated indices, allowing 24 rules per
interface. If all six rules in an index are Next rules, the data will be sent to the next index for
filtering.
IP Filter Set Index – The IP Filter Set Index from 1 to 12 and each index can set up to 6 IP
Filter.
Interface – Choices from PVC0 to PVC7 and LAN.
Direction – Choices are Both, Incoming and Outgoing. Select which direction of data flow
you wish to apply the filters to. Note that Incoming and Outgoing are from the point of view
of your router, relative to the interface you select. For WAN, data coming from outside your
system is considered Incoming and data leaving your system is Outgoing. For LAN, data
leaving your system is considered Incoming and data entering your system is Outgoing.
IP Filter Rule Index – Select the IP Filter Rule Index you wish to modify.
Active – Toggle this rule index on or off with Yes or No, respectively.
Source IP Address – Enter the source IP address you wish to deny access to your system.