PORT NUMBER Meaning and
Definition
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A port number refers to a numerical value that is used to identify a specific process or application running on a computer network. In computer networking, a port plays a crucial role in establishing communication between different devices, as it enables the identification and allocation of specific network services or processes that should receive incoming network packets.
Port numbers are represented as 16-bit unsigned integers, ranging from 0 to 65535. They are divided into three categories:
1. Well-known ports: These are port numbers ranging from 0 to 1023, which are officially assigned by the Internet Assigned Numbers Authority (IANA) to commonly used network services. For instance, port 80 is reserved for HTTP traffic, while port 22 is designated for secure shell (SSH) connections.
2. Registered ports: Ranging from 1024 to 49151, registered ports are assigned by IANA to specific applications or services upon request. These ports are used for a wide range of purposes, encompassing both popular and specialized services.
3. Dynamic or private ports: Ranging from 49152 to 65535, these ports are commonly utilized for temporary connections and dynamic allocation. They are not officially assigned by IANA and are primarily used for outgoing client traffic.
Port numbers function as address points, allowing data packets to be directed to the appropriate application or service running on a device within a network. By utilizing port numbers, different network processes can coexist and communicate efficiently, facilitating the exchange of data across various interconnected devices.
Common Misspellings for PORT NUMBER
- oort number
- -ort number
- 0ort number
- pkrt number
- plrt number
- pprt number
- p0rt number
- p9rt number
- poet number
- podt number
- poft number
- pott number
- po5t number
- po4t number
- porr number
- porf number
- porg number
- pory number
- por6 number
- por5 number
Etymology of PORT NUMBER
The term "port number" is derived from the word "port". In computer networking, a port is a communication endpoint within a computer or networked device. It is named after the physical ports found on the back of a computer, which serve as interfaces for connecting different devices.
The term "port number" specifically refers to the number assigned to a specific port for communication purposes. Each communication protocol, such as TCP (Transmission Control Protocol) or UDP (User Datagram Protocol), has its own set of port numbers for different types of services or processes. These port numbers help in identifying the specific application or service that is using a particular port for communication.
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