what is "Port Scanning" ?

Question

I don't know what it is! Port Scanner


what is that thing? may I get a describtion of it .. I just see (port closed, port opened) LOL !!

Answer 1

Port scanning tells what ports are open to access your computer so you can do security diagnosis on your PC or network.

If you have open ports for services you are not using then you should close them for less access for hackers.

Answer 2

It depends if you mean Internet Port Scanning or Computer Device Port Scanning. Usually, internet port scanning is when an internet port is opened meaning you can have access to it and closed meaning you can't access it. For example, AOL or MSN Messenger use a port and if it is closed, it can not access it. If it is device port scanning, the computer scans all the ports like USB and Firewire to check if there is anything plugged in.

Answer 3

(m)

A port scanner is a piece of software designed to search a network host for open ports. This is often used by administrators to check the security of their networks and by crackers to compromise it.

To portscan a host is to scan for multiple listening ports on a single target host. To portsweep is to scan multiple hosts for a specific listening port. The latter is typically used in searching for a specific service. For example, a SQL based computer worm may port sweep looking for hosts listening on TCP/UDP port 1433.