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6.4. Firewall Policy Configuration:
The firewall policy could obstruct outside intruders from intruding your
system. After selecting a security level, the preset firewall policies are
implemented.
Port filters
Port filters are rules that determine how a packet should be handled.
Refer to the following Port filters table; users in the LAN side could access
the port 21 (ftp) and port 80 (http) services in the Internet. But outside
users who access the port 21 and port 80 via WAN port of the device are
not allowed.
