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in case anyone stumbles upon this, here is an answer:
Uproxy is a project that has been discontinued, and the official website for Uproxy (uproxy.org) is no longer accessible. However, if you are looking to use a proxy server on Ubuntu, there are several other alternatives available.
One popular and actively maintained option is Squid, a caching proxy server that supports HTTP, HTTPS, FTP, and more. Squid is well-documented and widely used, making it a good choice for setting up a proxy server on Ubuntu.
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