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  2. List of HTTP status codes - Wikipedia

    https://en.wikipedia.org/wiki/List_of_HTTP_status_codes

    407 Proxy Authentication Required The client must first authenticate itself with the proxy. 408 Request Timeout The server timed out waiting for the request. According to HTTP specifications: "The client did not produce a request within the time that the server was prepared to wait.

  3. List of SIP response codes - Wikipedia

    https://en.wikipedia.org/wiki/List_of_SIP_response_codes

    407 Proxy Authentication Required The request requires user authentication. This response is issued by proxies. [1]: §21.4.8 408 Request Timeout Couldn't find the user in time. The server could not produce a response within a suitable amount of time, for example, if it could not determine the location of the user in time.

  4. HTTP 403 - Wikipedia

    https://en.wikipedia.org/wiki/HTTP_403

    Authentication required: In some cases, the server requires authentication to access certain resources. If the user does not provide valid credentials or if the authentication fails, a 403 status code is returned. IP restrictions: The server may also restrict access to specific IP addresses or IP ranges.

  5. Proxy server - Wikipedia

    https://en.wikipedia.org/wiki/Proxy_server

    "A 'transparent proxy' is a proxy that does not modify the request or response beyond what is required for proxy authentication and identification". "A 'non-transparent proxy' is a proxy that modifies the request or response in order to provide some added service to the user agent, such as group annotation services, media type transformation ...

  6. 407 Proxy Authentication Required (Mr. Robot) - Wikipedia

    https://en.wikipedia.org/wiki/407_Proxy_Authentication...

    "407 Proxy Authentication Required" is the seventh episode of the fourth season of the American thriller drama television series Mr. Robot, and the 39th episode overall. Written and directed by series creator Sam Esmail , it aired on November 17, 2019, on USA Network .

  7. List of HTTP header fields - Wikipedia

    https://en.wikipedia.org/wiki/List_of_HTTP_header_fields

    Proxy-Authenticate: Request authentication to access the proxy. Proxy-Authenticate: Basic: Permanent RFC 9110: Public-Key-Pins [55] HTTP Public Key Pinning, announces hash of website's authentic TLS certificate: Public-Key-Pins: max-age=2592000; pin-sha256="E9CZ9INDbd+2eRQozYqqbQ2yXLVKB9+xcprMF+44U1g="; Permanent RFC 7469: Retry-After

  8. Why am I asked to verify my account after signing in?

    https://help.aol.com/articles/why-am-i-asked-to-verify...

    • You sign in while using a VPN or a proxy server. • You've logged in with a private or incognito window.

  9. HTTP tunnel - Wikipedia

    https://en.wikipedia.org/wiki/HTTP_tunnel

    The most common form of HTTP tunneling is the standardized HTTP CONNECT method. [1] [2] In this mechanism, the client asks an HTTP proxy server to forward the TCP connection to the desired destination. The server then proceeds to make the connection on behalf of the client.