When the managed hosts have opened management connections to the Management Server the administrators can see them on the administration interface. Now the hosts are ready for centralized management. The first task is to deploy SSH Tectia software to the hosts and to upgrade those hosts that are running an outdated or a third-party version of Secure Shell. This can be performed as a single management task, by selecting a target host group and by specifying the required SSH Tectia software version for deployment. See Figure 5.2.
SSH Tectia Manager verifies the operating system running on each host that is queued for installation, and selects the appropriate installation package. It then pushes the installation packages to the hosts over the management connection (see Figure 5.3), and performs the installation without requiring any further administrator interaction.
The Management Agent notifies the Management Server on the success or failure of the installation jobs.
If an existing SSH Secure Shell server on Unix is upgraded to SSH Tectia Server, the open Secure Shell sessions will continue running (using the old server version), while all subsequent new sessions are opened with the new SSH Tectia version.
If an existing SSH Secure Shell client on a Windows workstation is upgraded to SSH Tectia Client while the user has the client application open, the user can be notified and given a grace period, after which the application is shut down and upgraded.
If a host is offline at the time of deployment, the installation job will remain pending until the host is online the next time, and its Management Agent connects to the Management Server. The pending installation job is then performed automatically.