How to detect unknown open ports and their associated applications using FPORT V2.0

The first step in hacking attack is information gathering and foot printing.It involves searching for victims open ports.To do this various application are available on Internet.But what can we do to stop/prevent hacker from knowing which ports of our system are open.Here is  Fport comes into picture.
 fport reports all open TCP/IP and UDP ports and maps them to the owning application. This is the same information you would see using the 'netstat -an' command, but it also maps those ports to running processes with the PID, process name and path. Fport can be used to quickly identify unknown open ports and their associated applications.




Usage:

C:\>fport

Pid Process Port Proto Path
392 svchost -> 135 TCP C:\WINNT\system32\svchost.exe
8 System -> 139 TCP
8 System -> 445 TCP
508 MSTask -> 1025 TCP C:\WINNT\system32\MSTask.exe
392 svchost -> 135 UDP C:\WINNT\system32\svchost.exe
8 System -> 137 UDP
8 System -> 138 UDP
8 System -> 445 UDP
224 lsass -> 500 UDP C:\WINNT\system32\lsass.exe
212 services -> 1026 UDP C:\WINNT\system32\services.exe

The program contains five (5) switches. The switches may be utilized using either a '/'
or a '-' preceding the switch. The switches are;

Usage:
/? usage help
/p sort by port
/a sort by application
/i sort by pid
/ap sort by application path