Edimax Technology AR-7284WnB - Manual (Page 52)

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3.3.5 Filtering Options
Choose ADVANCED > Filtering Options. The Filtering
Options page shown in the following figure appears.
3.3.5.1 Inbound IP Filtering
By default, all incoming IP traffic that does not originate from
the internal network is blocked when the firewall is enabled.
Normal outbound requests created by web browsing, email
and other software you run, work as usual as the requests
originated from your internal network. The inbound filter
allows you to create a filter rule to allow incoming IP traffic by
specifying a filter name and you need to select at least one
condition.
In the Filtering Options page, click Inbound IP Filtering.
The page shown in the following figure appears.