Database Reference
In-Depth Information
Network Ports
SAP business applications listen at clearly defined port numbers for incoming network con-
nections. Table 4-1 lists the most important port numbers and the naming conventions and
rules used for defining them for ABAP-based SAP applications.
T ABLE 4-1 Network Ports in SAP ABAP Applications
SAP Java-based applications use a different set of network ports. Table 4-2 lists the most
important ports and rules for using the SAP Java-based applications.
T ABLE 4-2 Network Ports in SAP Java Applications
In UNIX operating systems, the services file maps port numbers to the named services.
This entry gets there during the time of the SAP installation of a given business solution.
The services file location in a UNIX operating system is /etc/services. If, for any reason, the
service file entry is missing, then the communication between the SAP applications will be
lost and can be restored by adding an entry manually. Usually it requires a root user permis-
sion to make any changes to the etc/services file.
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