![]() ![]() If the computer is running, for example, an HTTP server (web server, for example, Nginx or Apache), it listens on port 80. The different port numbers are used in the TCP/IP protocol (or Internet Protocol) to address a specific program where everyone has the same address. On any computer (or host or webserver), several different programs can be executed simultaneously. To understand the same, we first need to understand what ports are? Also, here is a range of IP addresses that are designated to create local area networks: 127.0.0.1 – 127.255.255.255 We can say that the two terms are synonyms. To sum it up, using localhost is just an alternative way to access 127.0.0.1. You can use the hosts file to redirect the loopback to 127.0.0.1. If you are switching from Windows to a Unix/Linux system, you may notice that loopback is almost synonymous with localhost. ![]() ![]() It can be routed to any IP address, even one outside the reserved address block. But the word localhost is a label for the IP address, not the address itself. So what’s the difference? On most machines, localhost and 127.0.0.1 are functionally identical. The block of IPs reserved for loopback addresses ranges from 127.0.0.0 to 127.255.255.255. However, there are many more loopback addresses than just these two that you can use for local hosting. On a system configured to default standards, the localhost in the URL is converted to 127.0.0.1 in IPv4 or to the loopback mechanism ::1 for IPv6. However, it is important to remember that both are not strictly identical. In practice, the word localhost is considered synonymous with 127.0.0.1 for use and discussion. It allows the network connection to loop into itself, allowing you to emulate network connections when such a network is absent or inaccessible. What does the term localhost mean? Localhost describes the communication port that connects to the source server. In a broad sense, a loopback address depicts a virtual network device that creates a network connection with only one endpoint, which means that it starts and ends on the same device i.e., on your computer. A loopback address allows your computer to exchange data with itself using network connection protocols. It contains a block of over sixteen million IP addresses that are explicitly used for the loopback functionality. They do not exist on the 4 What is the difference Between 127.0 0.1 and localhost?ġ27.0.0.1 is the commonly used loopback address. There is a unique range of IP addresses that start at 127. On the internet, it is so organized that the IP address 127.0.0.1 is not registered anywhere, and the same could not be taken up by any website or domain name on the web. When you are referring to the localhost on a given computer, you are accessing the same computer on which you are currently working. This is because the localhost is, in fact, truly a type of loopback address that refers to the local device only. Why does it happen? It seems that we are accessing the same internet resource, but the result may be different each time. All of them will produce different results. You try accessing localhost on all these four systems individually. For e.g., let’s say you have four computers. If you try to switch to the localhost in browsers installed on different computers, you will get different results everywhere. The host is our website domain name (for example, abc.com), and its IP address is depicted by a pattern of four numbers from 0 to 255 each. Localhost on computer networks, as a standard, is an officially reserved domain name for private IP addresses. If you want to get into deep info, here’s are some more knowledge bombs! This would help us transition from our old design to a new design seamlessly without breaking any functionality on the website. Once we test all the functionalities, we can then take the theme live on our website. create our own computer as a server, test the functionalities of the new theme. In order to test the same, we can use the localhost, i.e. ![]() Though, before directly taking the new theme design live on the website, we would first want to test all the functionalities. For eg: the payment gateway, file download, content structure work absolutely fine after we implement the new design. Before going live, we want to make sure that all the functionalities in the new design work absolutely fine. Let’s say we at MyThemeShop want to test out a new design for our website. Localhost was primarily created so that developers, network engineers could test things on their own local system first before taking it live on the main server or the internet. As you know that it takes a certain bandwidth to communicate on the internet. ![]()
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