Netopia R5000 User Reference Manual page 197

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. The Change Filter Set screen appears. The items in this
screen are the same as the ones in the Add Filter screen (see
Filter Set Name:
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, before deleting the current filter set you'll have to note their configuration and then recreate them.
To delete a filter set, select Delete 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 delete it. Press Escape to exit the list without deleting the
filter set.
This section contains the settings for a filter set called Basic Firewall, which is part of the Netopia R5000
Series Router's factory configuration.
Basic Firewall blocks undesirable traffic originating from the WAN (in most cases, the Internet), but forwards all
traffic originating from the LAN. It follows the conservative "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
forwarded to the LAN.
Display/Change Filter Set...
Add Input Filter to Filter Set...
Display/Change Input Filter...
Delete Input Filter...
Move Input Filter...
Add Output Filter to Filter Set...
Display/Change Output Filter...
Delete Output Filter...
Move Output Filter...
"Adding filters to a filter set" on page
Filter Set 1
Security 13-19
13-14).