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address : Addresses in IPv4 are 32-bits
long example, 12.244.233.165 And Addresses in IPv6 are 128-bits example, 2001:0db8:0000:0000:0000:ff00:0042:7879 2. Port Number : Ports are represented by 16-bit numbers. There are 2^16 port numbers i.e 65336. They are divided into three categories 1. Well-Known Port Numbers 0 to 1023 are well-known port numbers are as they are used by well-known protocol services. These are allocated to server services by the Internet Assigned Numbers Authority (IANA). 2. Registered Port Numbers 1024 to 49151 are registerd port numbers i.e it can be registered to specific protocols by software corporations 3. Dynamic Port Numbers 49152 to 65536 are dynamic port numbers and they can be used by anyone Difference between IP address and Port Number :
What is a port number?A port number is a way to identify a specific process to which an internet or other network message is to be forwarded when it arrives at a server. All network-connected devices come equipped with standardized ports that have an assigned number. These numbers are reserved for certain protocols and their associated function. Hypertext Transfer Protocol (HTTP) messages, for example, always go to port 80 -- one of the most commonly used ports. Developers of the Advanced Research Projects Agency Network, an informal cooperation of system administrators and software authors, proposed the concept of port numbers. Once known as socket numbers, the early incarnation of port numbers is similar to the Internet Protocol (IP) address class used today. What is the difference between an IP address and a port number?An IP address identifies a machine in an IP network and is used to determine the destination of a data packet. Port numbers identify a particular application or service on a system.  An IP address is a logical address used to identify a device on the network. Any device connected to the internet is assigned a unique IP address for identification. This identifying information enables devices to communicate over the internet. Port numbers are part of the addressing information that helps identify senders and receivers of information and a particular application on the devices. Port numbers consist of 16-bit numbers. For example, a user request for a file transfer from a client, or local host, to a remote server on the internet uses File Transfer Protocol (FTP) for the transaction. Both devices must be configured to transfer files via FTP. To transfer the file, the Transmission Control Protocol (TCP) software layer in local host identifies the port number of 21, which, by convention, associates with an FTP request -- in the 16-bit port number integer that is appended to the request. At the server, the TCP layer will read port number 21 and forward the request to the FTP program at the server. What are the different types of port numbers and their uses?There are 65,535 port numbers, but not all are used every day. Restricted port numbers or well-known port numbers are reserved by prominent companies and range from 0 to 1023. Apple QuickTime, Structured Query Language services and Gopher services use some of these restricted ports. Those who want to register a specific port number can choose from 1024 to 49151. Software companies typically register these port numbers. Dynamic or private ports ranging from 49152 to 65536 are available for anyone to use. In another scenario, a port number is assigned temporarily -- for the duration of the request and its completion -- from a range of assigned port numbers. This is called a temporary port number. Here are some commonly used ports and their associated networking protocols:
The Internet Assigned Numbers Authority allocates and maintains all the port numbers listed above. What are common questions raised about port numbers?What is the port number for localhost?Localhost is the default name used to establish a connection with a computer. The IP address is usually 127.0.0.1. This is done by using a loopback address network. Port 80 is the common standard port for HTTP. What is port number 8080 used for?Port number 8080 is usually used for web servers. When a port number is added to the end of the domain name, it drives traffic to the web server. However, users can not reserve port 8080 for secondary web servers. What is port number 3360 used for?TCP/IP networks use port 3360. The connection-oriented protocol TCP demands handshaking to set up end-to-end communications. Upon establishing the connection, user data is transferred bidirectionally over the connection. What is my IP address and port number?The easiest way to find a router's public IP address is to search "what is my IP?" on a search engine like Google. Identifying a port number will depend on the operating system. For Windows:
For macOS:
What is a proxy server address and port number?A proxy server is, essentially, a computer on the internet with its own IP address. It sits between the client device and the remote server and acts as an intermediary to handle communication requests over the internet. When a local computer sends a web request, it automatically goes through the proxy server. The proxy server uses its own IP address for the web request and not the user's. Proxy servers offer privacy benefits -- for example, the ability to change the client IP address, masking the user's location. The proxy server address includes an IP address with the port number attached to the end of the address. The port number 8080 is usually used for web servers, proxy and caching.
What is the port number for Gmail?Gmail uses both Internet Message Access Protocol (IMAP) and SMTP. The IMAP port is 993, and the SMTP port is 25. This was last updated in July 2021 Continue Reading About port number
Dig Deeper on Network Infrastructure
What address is used to identify a computer on the internet?An IP address identifies a device on the global internet, acting as the device's logical address to identify that network connection. An IPv4 address consists of 32 bits, usually written as four decimal numbers, or a dotted quad. Possible values range from 000.000. 000.000 through 255.255.
Is a unique address or a series of number that identifies a device on the internet or a local network?An IP address is a long string of numbers assigned to every device connected to a network that uses Internet Protocol as the medium for communication; it's the digital world's equivalent of the mailing address associated with your home or workplace.
What is IP and MAC address?The IP address of a device mainly helps in identifying the connection of a network (using which the device is connecting to the network). The MAC Address, on the other hand, ensures the computer device's physical location. It helps us to identify a given device on the available network uniquely.
Is IP address unique to device or WIFI?Your internet service provider (ISP) assigns IP addresses to your internet-connected devices, and every IP address is unique. Considering every single internet-connected device has an IP address, billions of IP addresses exist.
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What address is a unique number that identifies a computer server or device connected to the Internet?
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