Billion Electric Company 7800 Network Router User Manual


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Firewall
Packet Filter
Packet ltering enables you to congure your router to block specied internal/external users (IP
address) from Internet access, or you can disable specic service requests (Port number) to / from
the Internet. This conguration program allows you to set up different lter rules for different users
based on their IP addresses or their network Port number. The relationship among all lters is “or”
operation, which means that the router checks these different lter rules one by one, starting from
the rst rule. As long as one of the rules is satised, the specied action will be taken.
Rule Name: User dened description for entry identication. The maximum name length is 32
characters, and then can choose an application that they want from the listbox.
Source IP address / Source Subnet Mask: This is an Address-Filter used to allow or block trafc
to/from particular IP address(es). Enter the IP & subnet mask you want to lter. If you leave empty
or 0.0.0.0, it means any IP address.
Destination IP address / Destination Subnet Mask: This is an Address-Filter used to allow or
block trafc to/from particular IP address(es). Enter the IP & subnet mask you want to lter. If you
leave empty or 0.0.0.0, it means any IP address.
Source Port: This Port or Port Range denes the ports allowed by the Remote/WAN to connect to
the application. Default is set from range 0 ~ 65535. It is recommended that only advance user is
to congure this feature.
Destination Port: This is the Port or Port Range that denes the port of the application.
Protocol: Specify the packet type (TCP, UDP, TCP/UDP) that the rule applies to. 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.
Direction: Determine whether the rule is for outgoing packets or for incoming packets.
Add: Click this button to add a new packet lter rule and the added rule will appear at the bottom
table.
Edit: Check the Rule No. you wish to edit, and then click “Edit”.
Delete: Check the Rule No. you wish to delete, and then click “Delete”.
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