Ports

Ports : Ports are the doors to your computer and any device connected to a network from where data comes in and goes out from the device.

Classification of the Status of Ports
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1. Open
2. Closed
3. Filtered (Protected by Firewall)

Types of Ports
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1. Physical Ports : Ports which are tangible in nature i.e which we can see and touch.

Example : USB Ports, VGA, HDMI port etc etc etc...

2. Virtual Ports: These are the virtual intangible ports from where data flows in and out from the device.

For Example :65,000 approx.

Predefined Ports : In Virtual ports we have many port numbers which are reserved for a range of protocols which cannot be changed.

For Example : HTTPS: 80,8080  , FTP : 21

User Defined Ports : These are the ports which are defined by the users mostly within the network according to the requirement policy of the respective organisation.

For Example: VOIP : Random available port