Netopia R2020 사용자 설명서

To modify a filter set, select Display/Change Filter Set in the Filter Sets screen to display a list of filter sets.

Select a filter set from the list and press Return to go to the Change IP Filter Set screen. The items in this 
screen are the same as the ones in the Add Filter screen (see 

).

Note: If you delete a filter set, all of the filters it contains are deleted as well. To reuse any of these filters in 
another set, you’ll have to note their configuration before deleting the current filter set and then recreate them.

To delete a filter set, select Delete Filter Set in the IP Filter Sets screen to display a list of filter sets.

Select a filter set from the list and press Return to delete it. Press the Escape key to exit the list without 
deleting the filter set.

This section contains the settings for a filter set, called Basic Firewall, which is par t of the Netopia R2020’s 
factor y configuration.

Basic Firewall blocks undesirable traffic originating from the WAN (in most cases, the Internet), but passes all 
traffic originating from the LAN. It follows the conser vative “that which is not expressly permitted is prohibited” 
approach: unless an incoming packet expressly matches one of the constituent input filters, it will not be 
for warded to the LAN.

                              Change IP Filter Set

         Filter Set Name:                   Basic Firewall

         Display/Change Input Filter...
         Add Input Filter...
         Delete Input Filter...

         Display/Change Output Filter...
         Add Output Filter...
         Delete Output Filter...