Custom policy file

From EsWiki

If your ES4 is behind a router that uses port forwarding to a different port, then you will need to use a custom policy file.

Example scenario

How do you tell if you need one? If external clients can connect to your ES4 without one, then you don't need one!

Here's a scenario that does need a custom policy file.

• Client applications are connecting using port 9899
• Router forwards the messages from the clients to the ES4's server, but uses 19899
• ES4's gateway listeners are listening on port 19899

Customize the Policy File

Here's the policy file that would be needed for our scenario:

<?xml version="1.0"?> 
 <!DOCTYPE cross-domain-policy SYSTEM "http://www.macromedia.com/xml/dtds/cross-domain-policy.dtd"> 
 <cross-domain-policy> 
      <allow-access-from domain="*" to-ports="9899" /> 
 </cross-domain-policy>

If the clients use multiple ports, add another allow-access-from line for each port.

Install the Custom Policy File

• From the web admin's General tab, click Edit server settings.
• Near the bottom you will find Enable Custom Policy File. Toggle it on.
• Click Save.
• A button should appear that says Edit Custom Policy File Contents. Click it.
• Paste the policy file that you customized above into the text area.
• Click Save.
• Restart the ES4 and test that clients can connect.