Usage
An HTTP Tunnel is used most often as a means for communication from network locations with restricted connectivity – most often behind NATs, firewalls, or proxy servers, and most often with applications that lack native support for communication in such conditions of restricted connectivity. Restricted connectivity in the form of blocked TCP/IP ports, blocking traffic initiated from outside the network, or blocking of all network protocols except a few is a commonly used method to lock down a network to secure it against internal and external threats.
Read more about this topic: HTTP Tunnel
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—Kenneth G. Wilson (b. 1923)
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—A.J. (Alfred Jules)