Adding note about proxies (#10428)

* Adding note about proxies

* Added sentence about ports

* Took out ports, added command

* Language clarification and clean up

* Minor tweaks

docs/enterprise-guide/activating-the-enterprise-edition.md

@@ -2,12 +2,22 @@
 
 The Enterprise edition of Metabase is distinct from the open-source edition, so to use it you'll need to first get a license, get the Enterprise edition, and then activate enterprise features with your license.
 
-You can get a license by signing up for a free trial of the Enterprise edition. [Find out more here](https://metabase.com/enterprise/).
+You can get a license by signing up for a free trial of the Enterprise edition. [Find out more here](https://metabase.com/enterprise/). Once you sign up for a free trial, you will receive an email containing a license token
 
 To get the Enterprise edition, you can either [download the latest .jar file](https://downloads.metabase.com/enterprise/latest/metabase.jar), or get the [latest Docker image](https://hub.docker.com/r/metabase/metabase-enterprise/) at `metabase/metabase-enterprise:latest`
 
 Once you have the Enterprise edition running, to activate all of its features go to the Admin Panel within Metabase, click on the Enterprise tab, click the "Activate a license" button, and then paste in your license token. The page should change to show you that Enterprise features are now active.
 
+###Validating Your Enterprise Token
+
+Your Metabase instance will need to be able to access the internet (specifically `https://store.metabase.com/api/[token-id]`) in order to validate your token and grant access to the Enterprise feature set. 
+
+If you need to route outbound Metabase traffic through a proxy on your network, use the following command:
+
+`java -DproxySet = true -DproxyHost = [your proxy's hostname] -DproxyPort = [your proxy's port] -jar. \ enterprise_metabase.jar`
+
+Depending on your organization's set-up, additional configuration steps may need to be taken. If the command above does not work for you, we would recommend reaching out to your internal infrastructure or dev ops teams for assistance.
+
 ---
 
 ## Next: setting up SSO