Common Communications Interface › TCP/IP Configurations › Assign TCP/IP Ports

Assign TCP/IP Ports

By default, CAICCI uses the following port numbers:

• 1202 for the TCPIP and TCPSSL protocols
• 1721 for the TCPIPGW and TCPSSLGW protocols

If a port is not appropriate, you can use an alternative.

Important! If you use an alternative port, ensure that your firewall or TCP/IP configuration permits CAICCI to use that port.

To assign an alternative TCP/IP port, use one of the following methods:

• Specify the port number in the CAICCI PROTOCOL statement, for example:

  PROCOTOL(TCPIP,4500)
  

• Specify the port number through the PARM parameter of the EXEC statement in the CAICCI TCP/IP server started task JCL member. For example, the following statement shows the specification in the CCITCP started task:

  //CCITCP EXEC PGM=CAS9PDGM,PARM='PORT=4500',…
  

• Specify the port number in your TCP/IP.ETC.SERVICES data set, for example:

  caicci   4500/tcp
  

  You can override this value using one of the two previous methods.