Mappoint Web Services and Sonic Firewall

We use the Sonic Wall firewall to control our internet access. The firewall 
is set up by our admins to block all traffic apart from specified addresses.

 

We use the Map Point web service to visualise our data but it the firewall 
appears to be blocking the maps when they are returned to us. If we allow 
open access through the firewall then the maps work fine.

 

I have supplied the URL of the Map Point web services to our admins and they 
have allowed these IP’s through but to no avail. To compound the problem, 
there is a bug in the firewall’s logging software which is not recording the 
IP’s of the addresses being blocked! Very annoying!

 

I was hoping that someone could provide me with a definitive list of 
addresses that the Map Point web service uses so that we could add them to 
our firewall.

 

Thanks in anticipation.