Installing on Linux on IBM System z

Use these instructions when you are installing SSH Tectia Server for Linux on IBM System z. For instructions on installing SSH Tectia Server on Linux running on the 32-bit x86 and the 64-bit x86-64 platform architecture, see Installing on Linux .

Download the online installation package containing the RPM (Red Hat Package Manager) installation files for SSH Tectia Server for Linux on IBM System z. The same installation package can be used on all supported Linux versions on IBM System z.

On the installation CD-ROM, the installation packages for Linux are located in the /install/linux/ directory.

Two packages are required: one for the common components of SSH Tectia Client and Server, and one for the specific components of SSH Tectia Server.

To install SSH Tectia Server for Linux on IBM System z, follow the instructions below:

Make sure no other Secure Shell software is using port 22 (SSH Tectia Server default listen port). Stop any competing server software or change their listen port.
Select the installation packages for Linux on IBM System z.
```
ssh-tectia-common-<version>-linux-s390.rpm
ssh-tectia-server-<version>-linux-s390.rpm
```
In the commands, <version> indicates the product release version and the current build number (for example, 6.0.19.123).
Install the packages with root privileges:
```
# rpm -Uvh ssh-tectia-common-<version>-linux-s390.rpm
# rpm -Uvh ssh-tectia-server-<version>-linux-s390.rpm
```
The server host key is generated during the installation. The key generation may take several minutes on slow machines.
Copy the license file to the /etc/ssh2/licenses directory. (This is not necessary in "third-digit" maintenance updates.) See Licensing.
If this is the initial installation of SSH Tectia Server, the directory does not yet exist. You can either create it manually or copy the license after the installation. In the latter case, you have to start the server manually after copying the license file.

The installation should (re)start the server automatically.

	Note
	If the server does not start (for example because of a missing license or because some other secure shell software is running on port 22), you can start it after correcting the problem by issuing the command:

# /etc/init.d/ssh-server-g3 start

For instructions on installing the client-side tools included in SSH Tectia Server for Linux on IBM System z, refer to the Client User Manual.