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

Network Communications External to the Cluster
----------------------------------------------

The following details are all based on the default settings.  These
can vary depending on the application setup and network design (such as
NAT) of the solution, so may need adjustment 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.


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) |
+--------------------------------------------+-------------+---------------------------------+
| Cisco HCM-F                                | HTTPS       | TCP 8443                        |
+--------------------------------------------+-------------+---------------------------------+
| MS PowerShell Proxy Node                   | HTTP, HTTPS | TCP 5985, 5986                  |
+--------------------------------------------+-------------+---------------------------------+



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 365/Online             | HTTP     | 80                        |
|                                  |          |                           |
|                                  | HTTPS    | 443                       |
+----------------------------------+----------+---------------------------+
| VOSS Cloud Licensing Service     | HTTP     | 80                        |
|                                  |          |                           |
|                                  | HTTPS    | 443                       |
+----------------------------------+----------+---------------------------+



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                                |
+-----------------------------------------------------------------+-------------------------+----------------------------------------+


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                                |
+-----------------------------------------------------------------+-------------------------+----------------------------------------+



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                             |
+-----------------------------------------------------------------+-------------------------+----------------------------------------+