What is HTTP tunneling?

Question

Yesterday, I was interviewed by one of the company for UI development. The point is the interviewer asked one important question what is HTTP tunneling. I've never come across this info on UI stuffs such as javascript, HTML and jquery.

Answer 1

HTTP tunneling is used to bypass firewalls and other network restrictions and an HTTP tunnel is used to create a direct network link between two locations.

A tunnel is used to ship a foreign protocol across a network that normally wouldn’t support it. You can take protocol A and wrap it or put it in a tunnel with protocol B.