The listen port monitor runs under the SAC and does the following:
Monitors the network for service requests
Accepts requests when they arrive
Invokes servers in response to those service requests
The listen port monitor is configured by using the sacadm command. Each instance of listen can provide multiple services. These services are specified in the port monitor's administrative file. This administrative file is configured by using the pmadm and nlsadmin commands.
The network listener process can be used with any connection-oriented transport provider that conforms to the Transport Layer Interface (TLI) specification. In the Oracle Solaris OS, listen port monitors can provide additional network services not provided by the inetd service.