Справочник Пользователя для Netopia 4541

Select Output Filter 2 and press Return.  In the Change Output Filter 2 screen, set the Protocol Type to allow 
GRE as shown below.

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.

Select Display/Change Input Filter.

                            Change Output Filter 2  

         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:                     GRE

Main

Menu

System

Filter

Sets

Display/Change

Filter Set

Configuration

Basic

Firewall

   +--#----Source IP Addr----Dest IP Addr------Proto-Src.Port-D.Port--On?-Fwd--+
   +---------------------------------------------------------------------------+
   | 1    0.0.0.0           0.0.0.0           TCP   NC       =2000   Yes No    |
   | 2    0.0.0.0           0.0.0.0           TCP   NC       =6000   Yes No    |
   |                                                                           |
   +---------------------------------------------------------------------------+