.. _reference-network-comms-outside-cluster:

Network communications external to the cluster
----------------------------------------------


Details in this section are all based on the default settings, which can vary depending on the 
application setup and network design (such as NAT) of the solution. Adjust accordingly. 
Where a dependant is noted, this is fully dependant on the configuration with no default.

These communications are all related to communications with devices
external to the cluster. Details are provided for the following: 

* Outbound communications to devices from the application/unified nodes
* Outbound to external systems from the proxy node
* Outbound to external systems from all nodes
* Inbound communications from external systems to the proxy node 
* Inbound communications to all nodes
* On-line help links to external documentation 


.. rubric:: Outbound communications to devices from the application/unified nodes

.. tabularcolumns:: |p{7cm}|p{3cm}|p{4cm}|

+--------------------------------------------+-------------+---------------------------------+
| Communication                              | Protocol    | Port                            |
+============================================+=============+=================================+
| Cisco Unified Communications Manager (UCM) | HTTPS       | TCP 8443                        |
+--------------------------------------------+-------------+---------------------------------+
| Cisco Unity Connection (CUXN)              | HTTPS       | TCP 443                         |
+--------------------------------------------+-------------+---------------------------------+
| Webex                                      | HTTPS       | TCP 443                         |
+--------------------------------------------+-------------+---------------------------------+
| LDAP directory                             | LDAP        | TCP/UDP 389 and/or 636(TLS/SSL) |
+--------------------------------------------+-------------+---------------------------------+
| MS PowerShell Proxy Node                   | HTTPS       | TCP 5986                        |
+--------------------------------------------+-------------+---------------------------------+
| Microsoft 365 (Graph API)                  | HTTPS       | TCP 443                         |
+--------------------------------------------+-------------+---------------------------------+
| Zoom                                       | HTTPS       | TCP 443                         |
+--------------------------------------------+-------------+---------------------------------+



.. rubric:: Outbound to external systems from the proxy node

.. tabularcolumns:: |p{7cm}|p{3cm}|p{4cm}|


+--------------------------------------+----------+---------------------------+
| Communication                        | Protocol | Network Protocol and Port |
+======================================+==========+===========================+
| API Sync and Async responses         | HTTPS    | TCP 443                   |
+--------------------------------------+----------+---------------------------+
| Northbound Notification messages     | HTTPS    | dependant                 |
+--------------------------------------+----------+---------------------------+
| Microsoft Teams / Microsoft Exchange | HTTPS    | 443                       |
+--------------------------------------+----------+---------------------------+
| VOSS Cloud Licensing Service         | HTTP     | 80                        |
|                                      |          |                           |
|                                      | HTTPS    | 443                       |
+--------------------------------------+----------+---------------------------+



.. rubric:: Outbound to external systems from all nodes


.. tabularcolumns:: |p{7cm}|p{3cm}|p{4cm}|

+-----------------------------------------------------------------+-------------------------+----------------------------------------+
| Communication                                                   | Protocol                | Port                                   |
+=================================================================+=========================+========================================+
| SNMP                                                            | SNMP                    | TCP/UDP 162                            |
+-----------------------------------------------------------------+-------------------------+----------------------------------------+
| SFTP as required for backup destinations                        | SFTP                    | TCP 22                                 |
+-----------------------------------------------------------------+-------------------------+----------------------------------------+
| NTP                                                             | NTP                     | UDP 123                                |
+-----------------------------------------------------------------+-------------------------+----------------------------------------+


.. rubric:: Inbound communications from external systems to the proxy node

.. tabularcolumns:: |p{7cm}|p{3cm}|p{4cm}|

+-----------------------------------------------------------------+-------------------------+----------------------------------------+
| Communication                                                   | Protocol                | Port                                   |
+=================================================================+=========================+========================================+
| Web Access                                                      | HTTPS                   | TCP 443                                |
+-----------------------------------------------------------------+-------------------------+----------------------------------------+
| API Request                                                     | HTTPS                   | TCP 443                                |
+-----------------------------------------------------------------+-------------------------+----------------------------------------+



.. rubric:: Inbound communications to all nodes


.. tabularcolumns:: |p{7cm}|p{3cm}|p{4cm}|


+-----------------------------------------------------------------+-------------------------+----------------------------------------+
| Communication                                                   | Protocol                | Port                                   |
+=================================================================+=========================+========================================+
| SSH and SFTP for management and files transfers                 | SFTP/SSH                | TCP/UDP 22                             |
+-----------------------------------------------------------------+-------------------------+----------------------------------------+




.. rubric:: On-line Help links to external documentation

To have access to the online help website URL, you may need to request that your network 
administrator provides access to the website.