Add a separate article on configuring a proxy server/firewall for Copilot (#51748)

Co-authored-by: Jess Hosman <1183847+jhosman@users.noreply.github.com>

content/copilot/managing-copilot/managing-github-copilot-in-your-organization/configuring-your-proxy-server-or-firewall-for-copilot.md

@@ -0,0 +1,33 @@
+---
+title: Configuring your proxy server or firewall for Copilot
+intro: 'You should allow certain traffic through your firewall or proxy server for {% data variables.product.prodname_copilot_short %} to work as intended.'
+permissions: 'Proxy server maintainers or firewall maintainers'
+product: '{% data reusables.gated-features.copilot %}'
+versions:
+  feature: copilot
+topics:
+  - Copilot
+shortTitle: Allow Copilot traffic
+---
+
+If your company employs security measures like a firewall or proxy server, you should add the following URLs, ports, and protocols to an allowlist to ensure {% data variables.product.prodname_copilot_short %} works as expected:
+
+| Domain and/or URL                      | Purpose |
+| :------------------------------------- | :--------------------------------- |
+| `https://github.com/login/*`             | Authentication |
+| `https://api.github.com/user`             | User Management |
+| `https://api.github.com/copilot_internal/*` | User Management |
+| `https://copilot-telemetry.githubusercontent.com/telemetry` | Telemetry |
+| `https://default.exp-tas.com/` | Telemetry |
+| `https://copilot-proxy.githubusercontent.com/` | API service for {% data variables.product.prodname_copilot_short %} suggestions |
+| `https://origin-tracker.githubusercontent.com` | API service for {% data variables.product.prodname_copilot_short %} suggestions |
+| `https://*.githubcopilot.com` | API service for {% data variables.product.prodname_copilot_short %} suggestions |
+
+Depending on the security policies and editors your organization uses, you may need to allowlist additional domains and URLs. For more information on specific editors, see "[Further reading](#further-reading)."
+
+Every user of the proxy server or firewall also needs to configure their own environment to connect to {% data variables.product.prodname_copilot_short %}. See "[AUTOTITLE](/copilot/configuring-github-copilot/configuring-network-settings-for-github-copilot)."
+
+## Further reading
+
+* [Network Connections in {% data variables.product.prodname_vscode %}](https://code.visualstudio.com/docs/setup/network) in the {% data variables.product.prodname_vs %} documentation
+* [Install and use {% data variables.product.prodname_vs %} and Azure Services behind a firewall or proxy server](https://learn.microsoft.com/en-us/visualstudio/install/install-and-use-visual-studio-behind-a-firewall-or-proxy-server) in the Microsoft documentation

content/copilot/managing-copilot/managing-github-copilot-in-your-organization/index.md

@@ -12,6 +12,7 @@ topics:
 children:
   - /managing-the-copilot-subscription-for-your-organization
   - /setting-policies-for-copilot-in-your-organization
+  - /configuring-your-proxy-server-or-firewall-for-copilot
   - /managing-access-to-github-copilot-in-your-organization
   - /enhancing-copilot-for-your-organization
 ---