SSH access to an edge server is solely limited to the root user with a secure and secret password and no other access is permitted. This SSH access is only used during deployment and upgrade operations.
User authentication and access control information is contained wholly within a secure data centre environment and never reaches the edge of the network.
Communication with an edge server is restricted to only servers within the network which hold valid SSL certificates, so that any direct connection to an edge server from an external system or client is prohibited.
The creation and management of these SSL certificates is an automated part of the installation and server deployment process, so that there is no need to manage certificates manually or directly - deploying a new server will generate and configure the required certification.
Certificates for an entire deployment can easily be refreshed periodically and as needed to maintain a high level of security.