# Net Service Name Configuration, TCP/IP Protocol

TCP/IP identifies a listener protocol address by a port number.

Host Name

Enter the host name of the computer where the listener resides.

Use the standard port number of 1521

Select this option to have the listener receive client request on the default port of 1521. Oracle recommends that you do not change this port number.

Use another port number

Select this option to specify another port to use other than 1521. Ensure the listener was configured for this port number as well.

| Caution: Other components of Net8 use different listening port numbers, such as 1575 for an Oracle Names server and 1630 for an Oracle Connection Manager. You should not use these ports for your listener protocol address.