BEC 8800N User Manual page 60

Incoming
All incoming IP traffic from the WAN is blocked by default when the firewall is enabled. However,
some IP traffic can be accepted by setting up filters.
Click Add to enter Add IP Filter -- Incoming screen to add a filter rule for incoming IP traffic.
Filter Name: User defined description for entry identification. The maximum name length is 32
characters
Protocol: Specify the packet type (TCP/UDP, TCP, UDP and ICMP) that the rule applies to from
the listbox. Select TCP if you wish to search for the connection-based application service on the
remote server using the port number. Or select UDP if you want to search for the connectionless
application service on the remote server using the port number.
Source IP address: This is an Address-Filter used to allow or block traffic from particular IP
address(es). Enter the IP range that you want to filter. If only the first IP block is filled, it means
only that IP entered will be targeted. If you leave both IP blocks empty, it means any IP address.
Source Subnet Mask: Type the subnet mask associated with the source IP address.
Source Port (port to port:port): This is the Port Range that defines the ports allowed by the
Remote/WAN to connect to the application. It is recommended that only advance user is to
configure this feature.
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