Definitive Network Extender destination IP/port list?

Does anyone have the definitive Network Extender destination IP/port list?  


I have heard that it's the following IPs:




With the following UDP ports

* 53

* 500

* 3500

* 52428


Yesterday, I found that my Network Extender was also requiring access to:



1. Can anyone confirm the exact list of all IP addresses a Network Extender will contact?


2. For each IP, can anyone confirm which exact destination ports are required?

 (I am skeptical that each destination IP needs all four ports)


With this information, Network Extender users can make sure our firewalls are open properly, as well as put in quality of service (QOS) rules to make sure the device gets higher priority transmission than other Web traffic.