Netopia 3300 - Manual (Page 160)

5-28 Firmware User Guide
Select Output Filter 2 and press Return. In the Change Output Filter 2 screen, set the Protocol Type to allow
GRE as shown below.
ATMP example
To enable a firewall to allow ATMP traffic, you must provision the firewall to allow inbound and outbound UDP
packets specifically destined for por t 5150. The source por t may be dynamic, so often it is not useful to apply
a compare function on this por tion of the control/negotiation packets. You must also set the firewall to allow
inbound and outbound GRE packets (Protocol 47, Internet Assigned Numbers Document, RFC 1700), enabling
transpor t of the tunnel payload.
From the Main Menu navigate to Display/Change IP Filter Set, and from the pop-up menu select Basic Firewall.
Change Output Filter 1
Enabled: Yes
Forward: Yes
Call Placement/Idle Reset: No Change
Force Routing: No
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
TOS: 0
TOS Mask: 0
Protocol Type: TCP
Source Port Compare... No Compare
Source Port ID: 0
Dest. Port Compare... Equal
Dest. Port ID: 1723
Established TCP Conns. Only: No
Return/Enter accepts * Tab toggles * ESC cancels.
Enter the packet specific information for this filter.
Change Output Filter 2
Enabled: Yes
Forward: Yes
Call Placement/Idle Reset: No Change
Force Routing: No
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
TOS: 0
TOS Mask: 0
Protocol Type: GRE
Return/Enter accepts * Tab toggles * ESC cancels.
Enter the packet specific information for this filter.