Hvordan lukkes specifikke åbne porte?

Efter at ha' scannet min PC med www.symantec.com/securitycheck -
fandt jeg at nedenstående Porte er åbne og udsatte på min PC.
Men hvordan lukkes disse Porte? Hvor finder jeg dem så disse kan blokeres for?


ICMP Ping     
Ping is a network troubleshooting utility. It asks your computer to acknowledge its existence. If your computer responds positively to a ping, hackers are more likely to target your computer. 

PORT    22 SSH.
TCP connections to this port might indicate a search for SSH, which has a few exploitable features. SSH is a secure replacement for Telnet. The most common uses of SSH are to securely login and copy files from a server.

PORT     80 HTTP
(Hypertext Transfer Protocol). HTTP is used to transfer Web pages over the Internet. Port 80 should be open only if you're running a Web server.

PORT     1025
Unused Windows Services Block (OPEN)