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====== MSP RMM - Site Concentrator ======

MSP Remote Monitoring & Management has a feature called a ''Site Concentrator'' that provides a central download point for updates:

  - The designated Site Concentrator server downloads all updates
  - The other machines in the site get their updates from the Site Concentrator

:!: This feature provides much of the functionality of Microsoft's WSUS Server without the complications.

The Site Concentrator server **provides its services via TCP port 8123**.

The Site Concentrator server **firewall must permit traffic to port 8123**.

===== Designate a Site Concentrator =====

**MSP RMM Dashboard -> Right-click a site -> Edit Site -> Site Concentrator (tab)**

  - **Specify a server** to be the ''Site Concentrator''
  - **Select** ''Open Windows Firewall'' checkbox
  - **Save**

==== Configure the Site Concentrator ====

On the Site Concentrator server:

  - **Open** the ''Advanced Monitoring Agent'' from the Start Menu and log in
  - **Edit** ''Agent Settings'' (tab)
  - **Deselect** ''Use a Proxy Server'' (disable proxy usage)
  - **Save and test** the agent's connection
  - **Restart** the ''Advanced Monitoring Agent'' **services** or **reboot**

{{:computing:security:msp_rmm_agent.png?200|Advanced Monitoring Agent Login}}
{{:computing:security:msp_rmm_agent_edit_agent_options.png?300|Edit Agent Options}} {{:computing:security:msp_rmm_agent_agent_conn.png?350|Agent Connection Settings}} 

===== Test Access to Site Concentrator =====

Once you have performed the previous steps to designate a Site Concentrator, you should test the access.

<note warning>We have seen where the above procedure does not always open the firewall on Domain Controller servers being designated as a Site Concentrator.  You should test access and adjust the Site Concentrator's firewall if necessary.</note> 

  - **Wait for a short interval** after the above procedure
    * The MSP RMM agent adds the firewall rule to the Site Concentrator server
  - **Test that the port is open** using ''telnet''

:!: The ''telnet'' feature must be installed on a Windows computer.  It is not installed by default.

<file>
telnet YourSCHostName 8123
</file>

{{ :computing:security:msp_rmm_edit_site.png?650 |Edit Site}}

{{ :computing:security:msp_rmm_firewall_rule_site_concentrator_create.png?650 |Designate a Site Concentrator}}

==== Success or Failure ====

How to evaluate the results of your ''telnet'' test:

**If the port is open**, ''telnet'' will connect and display a **blank CMD box**.

**If the port is closed**, the DOS CMD box will just hang at ''Connecting...'' 

<note tip>Press ''control-['' (escape) then type ''quit'' and press the ''enter'' key to exit ''telnet''.  Hover over the following images for more tips.</note>

{{ :computing:security:msp_rmm_firewall_rule_site_concentrator_test.png?600 |Test Port 8123}}

{{ :computing:security:msp_rmm_firewall_rule_site_concentrator_test_success.png?600 |A Successful Test}}

{{ :computing:security:msp_rmm_firewall_rule_site_concentrator_test_fail.png?600 |A Failed Test}}

===== Adjust the Windows Firewall on the Site Concentrator =====

:!: Domain Controllers use the **Domain Profile** of the Windows Firewall.

{{ :computing:security:msp_rmm_firewall_rule_site_concentrator.png?750 |Windows Advanced Firewall}}

{{ :computing:security:msp_rmm_firewall_rule_site_concentrator_properties.png?400 |Advanced Monitoring Agent Site Concentrator Rule}}

===== Symptom of Blocked Access to Site Concentrator =====

**If client access to a designated Site Concentrator fails**, you will often see **alternating failures and successes** in the Managed Antivirus updates.  First the client tries to download the updates from the Site Concentrator (fails), then it tries to download the update from Internet servers (succeeds).

Once you **open the firewall** on the Site Concentrator, the **updates almost always succeed**.

{{ :computing:security:msp_rmm_mav_update_failures.png?400 |Alternating Update Failures}}

Once you fix the connectivity issue, you can initiate a MAV update using the **MSP RMM Dashboard**:

**Right-click a workstation -> Managed Antivirus Scan -> Update Threat Definitions**
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