Update proxy documentation

docs/setup-robusta/proxies.rst

@@ -1,28 +1,38 @@
 Deploying Behind Proxies
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-Robusta can run in airgapped environments with no internet access. However, to send notifications to external
-:ref:`sinks <Sinks Reference>` like Slack, Robusta might need to communicate with services outside your cluster.
+Robusta requires internet access in the following cases:
 
-On most clusters this will just work. In clusters behind HTTP(s) proxies, you'll need to configure proxy settings.
+* Robusta SaaS is enabled
+* Robusta is configured to send notifications to services such as Slack (via :ref:`sinks <Sinks Reference>`)
+
+If your Kubernetes cluster is behind an HTTP proxy or firewall, follow the instructions below to ensure Robusta has the necessary access.
 
 Configuring Proxy Settings for Robusta
 ----------------------------------------
-Only the Robusta Runner pod needs proxy settings, as this is the only Pod that communicates with external sinks.
 
-To configure proxy settings, add environment variables using the following Helm values.
+All outbound traffic from Robusta is handled by the `robusta-runner` deployment. 
 
-* ``runner.additional_env_vars`` - to set one variable at a time
-* ``runner.additional_env_froms`` - to set many environment variables at once
+To configure proxy settings for `robusta-runner`, set the `HTTP_PROXY` and `HTTPS_PROXY` environment variables. You can do so with one of the follopwing Helm values:
 
-Either Helm value can be used, depending on your preference.
+* ``runner.additional_env_vars`` - to set one environment variable at a time
+* ``runner.additional_env_froms`` - to set many environment variables at once
 
-For more details, refer to `this GitHub issue about HTTP(s) proxies <https://github.com/robusta-dev/robusta/pull/450>`_.
+Either Helm value can be used, depending on your preference. See `this GitHub issue for details and an example configuration <https://github.com/robusta-dev/robusta/pull/450>`_.
 
 Domains Used by Robusta Saas UI
 ---------------------------------
-To ensure all Robusta SaaS UI features work well in environments with restricted internet access, please allow access to the following domains.
+
+If you are using Robusta SaaS, ensure that your network allows access to the following domains:
 
 .. code:: bash
 
     api.robusta.dev,robusta-charts.storage.googleapis.com,us-central1-docker.pkg.dev,platform.robusta.dev,xvyhpoxfmtpuqqeyqkso.supabase.co,relay.robusta.dev
+
+Running Robusta in Air-Gapped or Offline Environments
+------------------------------------------------------------------------------
+
+You can run Robusta entirely offline if the following conditions are met:
+
+* No external sinks are configured (e.g., services on the public internet).
+* The Robusta UI is either disabled or running on-premise.