client or server side rendering

Experts,

Client browses to a web site on webserver1.

Client clicks on a link that has an IFRAME pointing to webserver-2.  The link opens up within the same web browsing session but the client never made an http request to webserver-2.  In this scenario it appears that the webserver-1 made the connection to webserver-2 and rendered it to the client.  
What is this process or terminology called?
trojan81Asked:
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Dave BaldwinFixer of ProblemsCommented:
No, the client's browser makes the request, just as it does for all the content on the page including images, CSS and javascript files.  So yes, the client does make a request to webserver-2 by way of the code in the web page.
trojan81Author Commented:
Dave,

When they say server-side rendering, do they mean that server1 makes the request to server2, and then renders it to the client so that the client doesn't have to make the request?

Take for example if we placed the client behind a firewall and only allowed it to reach webserver 1, would server-side rendering help accomplish the goal of having the client see data from webserver 2?
Dave BaldwinFixer of ProblemsCommented:
When they say server-side rendering
I have never heard of server-side rendering when it comes to web pages and I don't know who they are.

As for your second idea, it simply does not work that way.  Web pages are 'rendered' in the client's browser.  The iframe has nothing to do with that.  An iframe merely allows you to include content from a different URL in the current page.  Nothing more.

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gheistCommented:
the case is called  "reverse proxy"
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