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Loopback (also written loop-back) is the routing of electronic signals or digital data streams back to their source without intentional processing or modification. It is primarily a means of testing the communications infrastructure. Loopback can take the form of communication channels with only one communication endpoint.
In computer networking, localhost is a hostname that refers to the current computer used to access it. The name localhost is reserved for loopback purposes. [1] It is used to access the network services that are running on the host via the loopback network interface.
NAT hairpinning, also known as NAT loopback or NAT reflection, [27] is a feature in many consumer routers [28] where a machine on the LAN is able to access another machine on the LAN via the external IP address of the LAN/router (with port forwarding set up on the router to direct requests to the appropriate machine on the LAN).
Loopback device may refer to: Loopback, related to electronic communication interfaces; Loop device, a pseudo-device in Unix-like operating systems
The name localhost is a commonly defined hostname for the loopback interface in most TCP/IP systems, resolving to the IP addresses 127.0.0.1 in IPv4 and ::1 for IPv6.As a top-level domain, the name has traditionally been defined statically in host DNS implementations with address records (A and AAAA) pointing to the same loopback addresses.
Sometimes, the loop device is erroneously referred to as loopback device, but this term is reserved for a networking device in operating systems. The concept of the loop device is distinct. In BSD-derived systems, such as NetBSD and OpenBSD , the loop device is called "virtual node device" or "vnd", and generally located at /dev/vnd0 , /dev ...
StrongLoop offers a subscription-based product known as StrongLoop Suite. StrongLoop Suite includes three components: an open source private mobile Backend-as-a-Service mBaaS named LoopBack; a second component called StrongOps, which provides operations and real-time performance monitoring in a console; and a supported package of Node.js called StrongNode, containing advanced debugging ...
The claim in the edit comment by Kbrose that 0.0.0.0 "is not a loopback network" is technically true of the _network_ 0.0.0.0/8 -- on one view of what a "loopback network" is, which is really not precisely defined in any of the IP standards -- but if it is meant to imply that 0.0.0.0/32 is "not a loopback address" it's false, both empirically ...