Installing SSH Tectia Server on Linux on IBM System z

SSH Tectia Server for Linux on IBM System z is supplied in an RPM (Red Hat Package Manager) binary package for Red Hat Enterprise Linux and SUSE Linux for Linux on System z. The same installation package can be used on all supported Linux versions on IBM System z.

The SSH Tectia online installation bundle contains the RPM files and the license file. On the installation CD-ROM, the installation packages for Linux are located in the /install/linux/ directory.

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.
Download the commercial or the evaluation version of the installation bundle according to your license type:
```
ssh-tectia-server-ibm-z-<version>-linux-s390-comm.tar
ssh-tectia-server-ibm-z-<version>-linux-s390-upgrd-eval.tar
```
In the package names, <version> indicates the product release (for example, 6.1.4.123).
Select the installation packages. Two packages are required: one for the specific components of SSH Tectia Server for Linux on IBM System z, and another for the common components of SSH Tectia Client and Server:
```
ssh-tectia-server-<version>-linux-s390.rpm
ssh-tectia-common-<version>-linux-s390.rpm
```
Install the packages with root privileges:
```
# rpm -Uvh ssh-tectia-server-<version>-linux-s390.rpm
# rpm -Uvh ssh-tectia-common-<version>-linux-s390.rpm
```
However, if you have already installed SSH Tectia Client, there is no need to install the common file again.
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. See License File.
If this is the initial installation of SSH Tectia Server for Linux on IBM System z, 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.
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 Installing SSH Tectia Client on Linux on IBM System z.