Proxy 4 - Ever

A more robust service using the OpenVPN protocol for full-system encryption. It supports up to eight active devices and includes features like private DNS and a strict no-logs policy. Key Features and Pricing

curl "http://challenge.com/?url=http://0177.0.0.1:8080/flag"

To prevent "Proxy 4 Ever" style vulnerabilities: proxy 4 ever

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Web Exploitation Difficulty: Medium/Hard Keywords: SSRF, HTTP Request Smuggling, HTTP Headers, IPv4/IPv6, localhost bypass A more robust service using the OpenVPN protocol

We perform a port scan via the SSRF. Since the proxy blocks 127.0.0.1 , we try alternative notations.

Proxy 4 Ever is a reliable proxy service that offers users a secure and anonymous way to browse the internet. With its vast network of proxy servers, unlimited bandwidth, and high-speed proxies, the service is suitable for individuals and businesses seeking to protect their online identities and activities. While there are some potential drawbacks, the benefits of using Proxy 4 Ever far outweigh the limitations. Overall, Proxy 4 Ever is a great option for those seeking a trustworthy proxy service. With its vast network of proxy servers, unlimited

The platform is generally regarded as a legitimate service with a long-standing history in the privacy industry. While the free proxy provides basic encryption, experts recommend the paid VPN for users requiring full-system privacy and a verified "no-logs" commitment. 4everproxy - Free Web Proxy | Unlimited VPN

This is the most complex and likely intended solution for a challenge named "Forever" (implying a waiting period or loop).