Concepts overview

SecNumCloud Connectivity - Concepts overview

Last updated 18th November, 2021

What is SNC Connectivity ?

OVHcloud SecNumCloud products need a secured connection to meet compliancy requirements. Such connection is secured using IPsec protocol from vRack for external connectivity and through a secured link between SecNumCloud zones.


Network extension

From vRack, IPsec tunnels can be extended with any OVHcloud product in vRack, including, and not limited, OVHcloud Connect for remote IPsec endpoints.


OVHcloud use dedicated hardware appliance to achieve best performance and provide high bandwidth connection, from external and between SecNumCloud zones.

High Availability

IPsec connection is provided through two devices (per SecNumCloud zone) and BGP in IPsec tunnels enable maximum resiliency.


SNC Network Global Overview


  • A subnet is composed of one IPv4 prefix. Maximum supported size: /24
  • SecNumCloud products are attached to subnets.
  • A subnet is only available in one SecNumCloud zone, it can not be strechted between datacenters or between SecNumCloud and non-SecNumCloud zones.


SPN means Secure Private Network. It is the routing instance containing subnets.

SPN Connector

Its purpose is to route trafic between SPN. By default, an SPN Connector is local to a SecNumCloud zone and can be upgraded to global on several SecNumCloud zones.


The VPN-SPN manages the external network connectivity through the IPsec protocol.

Go further

Join our community of users on

Did you find this guide useful?

Please feel free to give any suggestions in order to improve this documentation.

Whether your feedback is about images, content, or structure, please share it, so that we can improve it together.

Your support requests will not be processed via this form. To do this, please use the "Create a ticket" form.

Thank you. Your feedback has been received.

These guides might also interest you...

OVHcloud Community

Access your community space. Ask questions, search for information, post content, and interact with other OVHcloud Community members.

Discuss with the OVHcloud community

In accordance with the 2006/112/CE Directive, modified on 01/01/2015, prices incl. VAT may vary according to the customer's country of residence
(by default, the prices displayed are inclusive of the UK VAT in force).