Administering the listen port monitor

Log files

The listener creates and manages the log files /var/saf/pmtag/log and /var/saf/pmtag/o.log. Log file entries are in the following format:

date time; PID; message

date and time show when the entry was made. PID is the ID of the process that made the log entry. message gives a description of the event or error that caused the log message.

The following events are logged:

each connection that arrives
each service that is started
each file descriptor passed over a pipe
state changes that occur
errors and unusual conditions

The log files are held open by the listener process. Entries are made by two types of processes: the listener process (listen) and the NLPS server process (nlps_server). nlps_server is a service that provides compatibility with pre-UNIX System V Release 4 service requests.