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Discover your proxy
Some networks are setup to require a proxy in order for you to reach the Internet or perhaps that special network you are interested in. The use of proxies are introduced on your network by the people and management that run your network for policy or technical reasons.
In the networking space there are a few methods for the automatic detection of proxies and how to connect to them, but none of those methods are truly universal and curl supports none of them. Furthermore, when you communicate to the outside world through a proxy that often means that you have to put a lot of trust on the proxy as it will be able to see and modify all the non-secure network traffic you send or get through it. That trust is not easy to assume automatically.
If you check your browser's network settings, sometimes under an advanced settings tab, you can learn what proxy or proxies your browser is configured to use. Chances are big that you should use the same one or ones when you use curl.
As an example, you can find proxy settings for Firefox browser in Preferences => General => Network Settings as shown below:
proxy settings for Firefox
Last modified 6mo ago
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