The head office has placed a H.323 Gatekeeper in the DMZ of the corporate NetDefend Firewall.
This firewall should be configured as follows:
Web Interface
Create a new H.323 ALG object:
1. Go to: Objects > ALG > Add > H.323 ALG
2. Specify a name for the ALG, in this case my_h323_alg
3. Click OK
Create a custom Service object for the H.323 gatekeeper:
1. Go to: Objects > Services > Add > TCP/UDP
2. Now enter:
• Name: my_h323_gatekeeper_service
• Type: UDP
• ALG: my_h323_alg
• Destination port: 1719
3. Click OK
Chapter 6: Security Mechanisms
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