User Manual Part 3

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Incoming IP Filtering
By default, all incoming IP traffic from the WAN is blocked when the firewall is
enabled. However, some IP traffic can be accepted by setting up filters.
Path: Security > Packet Filtering > Incoming IP Filtering
Adding an Incoming IP Filter
You can create a filter rule to identify incoming IP traffic by specifying a new filter
name and at least one condition for the filter. All of the specified conditions in this
filter rule must be satisfied for the rule to take effect.
To add an incoming IP filter, complete the following steps.