TKE TCP/IP setup

TKE uses TCP/IP for communication between the TKE workstation and the z/OS operating system. You should already have TCP/IP installed and configured.

If you do not have a domain name server running, update the Hosts file with your IP address. TKE refers to the host by IP address, not by the host name. If a domain name server (DNS) is running, then this update is unnecessary as all hosts will be identified to the DNS.
Figure 1. Entry example
```
HOST   : 9.117.59.140 :
```
Update your TCPIP profile to reserve a port for the TKE application.
Figure 2. Example of reserving a port
```
 PORT
 50003 TCP CSFTTCP           ;ICSF TKE Server 
```
The example allows use of the port by the server named CSFTTCP. The port number must not start in column 1. TCP is the port type. CSFTTCP is the name of the started procedure. The 50003 is added to the port section and can be changed by the installation. The port number here has to be specified on the workstation when connecting to the host.

Any job with jobname CSFTTCP can connect to this port.