SAS^® products that perform network communications use TCP/IP ephemeral ports. These ephemeral ports are generally used within the host domain that they are allocated in and are not required to be open on a firewall.

Here are some SAS components that use TCP ephemeral ports:

• The FILENAME FTP engine opens the FTP client port
• The FILENAME EMAIL engine uses the ephemeral port
• Spawner environments such as SAS/CONNECT^® and SAS^® Integration Technologies Object Spawner use ephemeral ports
• The SIGNON statement opens the SAS/CONNECT client ephemeral port

If you must control the ports used under z/OS, set all of the following TK environment variables in the TKMVSENV file that is allocated by the SAS session:

Beginning in SAS^® 9.2, the default setting is TCP_EPH_MAP_ENABLED=1.

Note: You can control the ephemeral port used for the SAS/CONNECT Spawner SASDAEMONPORT option by specifying the -SASDAEMONSERVICE parameter in the PARMS file.

Operating System and Release Information