In a tightly configured network policy environment, where every single connection must go through a proxy, a simple task such as file transfer would be a hassle.

A simple scp connection also would be denied if it is not through a proxy.

However it still can be achieve with following additional internal paramater.

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Explanation

1. Supply an option, where will be proxy-ing via nc with ProxyCommand=nc
2. Define the proxy host and port with --proxy <proxyHost>:<proxyPort>.
3. Define the type of proxy as http with --proxy-type http %h %p