Chapter 4 Other Configuration
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To modify any previously created filter rule, click on the note pad icon in the right hand column of the Filter List
for the set you want to configure. Adjust the settings as desired and click the
Apply
button to put the new settings into
effect.
First determine the direction of the traffic you want the rule to filter. To filter WAN to LAN traffic, select the
Inbound Filter
option. Any new Inbound Filter rules created will appear in the list. Likewise, should you to filter LAN to
WAN traffic, create an
Outbound Filter
rule.
Note
The Service Filtering feature of the Firewall may interfere with rules configured in the IP
Filter Configuration window. For example, FTP packets are not allowed through from
the external network by default. See the Firewall section below for details.
The parameters described in the table below are used to set up filter rules.
Click the
Apply
button to put the new rule into effect. Any filter rule configured in the menu will appear in the
Filters List with the new settings. The Router must save the new settings and reboot before the new rules are applied.
Filters Parameter
Description
Src IP Address
For an Outbound Filter, this is the IP address or IP addresses on your LAN
for which you are creating the filter rule. For an Inbound Filter, this is the
IP address or IP addresses for which you are creating the filter rule. You
can opt to indicate a
Single IP, an IP Range or Any IP from the pull-down
menu. Choosing Any IP will apply the rule to all WAN or all LAN IP
addresses depending on which type of rule (Inbound or Outbound) is being
configured.
Dest IP Address
Where the Destination IP address resides also depends on if you are
configuring an Inbound or Outbound filter rule. You can opt to indicate a
Single IP, an IP Range or Any IP from the pull-down menu.
Source Port
The Source Port is the TCP/UDP port on either the LAN or WAN depending
on if you are configuring an Outbound or Inbound Filter rule. Select one of
the following options from the pull-down menu to define
Any Port, Single
Port, Port Range or Safe Range (ports above 1024).
Dest. Port
The Destination Port is the TCP/UDP port on either the LAN or WAN
depending on if you are configuring an Outbound or Inbound Filter rule.
Select one of the following options from the pull-down menu to define a
Any Port, Single Port, Port Range or Safe Range (ports above 1024).
Protocol
Select the transport protocol (
TCP, UDP or ANY) that will be used for the
filter rule.
Action
Select to
Accept or Deny transport of the data packets according to the
criteria defined in the rule. Packets that are allowed are routed to their
destination; packets that are denied are blocked.
