netstat

iceman:/etc/rc.d # netstat -l --numeric-ports
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State      
tcp        0      0 *:111                   *:*                     LISTEN      tcp        0      0 *:2000                  *:*                     LISTEN      tcp        0      0 *:631                   *:*                     LISTEN      tcp        0      0 localhost:25            *:*                     LISTEN      tcp        0      0 localhost:6010          *:*                     LISTEN      tcp        0      0 localhost:37435         *:*                     LISTEN      tcp        0      0 *:22                    *:*                     LISTEN      tcp        0      0 localhost:25            *:*                     LISTEN      tcp        0      0 localhost:6010          *:*                     LISTEN      udp        0      0 *:32768                 *:*                                 udp        0      0 *:2727                  *:*                                 udp        0      0 *:4520                  *:*                                 udp        0      0 *:5060                  *:*                                 udp        0      0 *:4569                  *:*                                 udp        0      0 *:5353                  *:*                                 udp        0      0 *:111                   *:*                                 udp        0      0 *:631                   *:*