INFORMATION

In a policy's "Host Discovery" tab is a section labeled Ping Methods. Configuring the Destination Ports to utilize the 'built-in' setting designates a specific set of ports to be used.

DETAILS

 The "built-in" ports are defined by the scanner's ping_host4.inc file. This file includes the following TCP ports: 

139 
135 
445 
80 
22 
515 
23 
21 
6000 
1025 
25 
111 
1028 
9100 
1029 
79 
497 
548 
5000 
1917 
53 
161 
9001 
49000 
443 
993 
8080 
2869

You can confirm that the metadata in ping_host4.inc is used by the ping plugin by looking at the plugin code for plugin ID 10180, Ping the remote host, where the nasl code lists the included .inc files:

81    include("raw.inc");
82    include("misc_func.inc");
83    include("ping_host4.inc");