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10-48 Firmware User Guide
Call Filtering
Netopia Firmware Version 5.4 supports a call filtering mechanism that lets you control which packets cause
connections to be established and which packets cause connections to be maintained (that is, to not time out
due to inactivity). This feature is part of the Filter Set management component of the firmware. Call filtering
makes use of the existing sets of filter rules that can be associated with a connection.
The term
connection
includes both non-VPN connection profiles for which the remote network is reached
through a switched WAN interface, such as Analog or ISDN, and all VPN connection profiles, such as ATMP,
PPTP, and IPsec.
The call filtering mechanism is useful if you have a time-limited type of connection. Such a connection may time
out during a period of inactivity and may you want it to be re-established or maintained automatically for certain
types of traffic.
You manage Filters and Filter Sets in the Filter Sets management screen under the System Configuration
menus.
The Add Output Filter menu appears as follows:
When you add (or change) an output filter, and toggle
Forward
to
Yes
, a new
Call Placement/Idle Reset
pop-up
menu becomes visible.
Filter SetsSystem Configuration
Main
Menu
Add Output Filter
Enabled: Yes
Forward: Yes
Source IP Address: 0.0.0.0
Source IP Address Mask: 0.0.0.0
Dest. IP Address: 0.0.0.0
Dest. IP Address Mask: 0.0.0.0
Protocol Type: ANY
ADD THIS FILTER NOW CANCEL
Return/Enter accepts * Tab toggles * ESC cancels.
Enter the packet specific information for this filter.