LevelOne FBR-1461 - Manual (Page 63)

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Packet Filter
Packet filtering enables you to configure your router to block specified internal/external
users (IP address) from Internet access, or you can disable specific service requests
(Port number) to /from Internet. This configuration program allows you to set up to 6
different filter rules for different users based on their IP addresses or their network Port
number. The relationship among all filters is “or” operation, which means that the router
checks these different filter rules one by one, starting from the first rule. As long as one of
the rules is satisfied, the specified action will be taken.

Rule Name: Users-define description to identify this entry. The maximum name length
is 32 characters, and then can choose application that they want from listbox.

Internal IP Address / External IP Address: This is the Address-Filter used to allow or
block traffic to/from particular IP address(es). Input the range you want to filter out. If
you leave empty or 0.0.0.0, it means any IP address.

Protocol: Specify the packet type (TCP, UDP, ICMP, etc.) 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.

Action: If a packet matches this filter rule, Forward (allows the packets to pass) or
Drop (disallow the packets to pass) this packet.

Internal Port: This Port or Port Range defines the ports allowed to be used by the
Remote/WAN to connect to the application. Default is set from range 0 ~ 65535. It is
recommended that this option be configured by an advanced user.