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Question/Issue:
This document describes how to configure Microsoft NetMeeting to pass through a Symantec firewall.


Solution:
This configuration has been lab tested on both LAN and WAN (Internet Routable addresses), audio and video only. Other NetMeeting components have yet to be lab tested.

1. Enable the H323 Daemon.
   
   
   
2. Create an alias:
   

• Name: Whatever you prefer.
• Alias Replacement is the outside or DMZ IP address of the firewall.
  • Destination Host is the inside or actual IP address of the computer.
    
    

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    Note: In this example the IP address 172.18.128.146 is a member of the inside network (DMZ) but can be replaced by the outside IP (Internet Routable) of the firewall.

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  • Create Protocols TCP/522, 389, 1503, and 1731
    
    
    
    

1. Create a GSP for each protocol.
   
   
   
   
   
   
2. Add all the newly created GSPs and H323 to a NetMeeting Rule (inbound/outbound):
   
   
3. Include the following Services to each rule in the Included Services window of the dialog box (note that we are adding the ping* service so that we can test outbound traffic).
   
   
   
   
4. Add a Redirect for each GSP and H323 Daemon as the Service.
   
   Requested address = the routable address.
   Redirected address is the actual address of the computer (leaving the port blank).
   
   
   
   
   
5. Save and reconfigure.
   

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Note: Even with all configured correctly, NetMeeting will give the following error on an outbound connection (from behind the firewall to outside):

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This does not go away, but the meeting will work. Occasionally the connection needs to be attempted several times, and audio is a bit choppy.

Document ID: 2002090410251554
Last Modified: 08/06/2003
Date Created: 09/04/2002
Product(s): Symantec Enterprise Firewall 6.5, Symantec Enterprise Firewall 7.x, Symantec Gateway Security Appliance 1.0, Symantec VelociRaptor 1.1, Symantec VelociRaptor 1.5
Release(s): Symantec Enterprise Firewall 6.5.2, Symantec Enterprise Firewall 7.0, Symantec Enterprise Firewall 7.03, Symantec Enterprise Firewall 7.04, Symantec Gateway Security Appliance 1.0, Symantec VelociRaptor 1.1, Symantec VelociRaptor 1.5

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