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  2. Reverse proxy - Wikipedia

    en.wikipedia.org/wiki/Reverse_proxy

    Reverse proxies can operate wherever multiple web-servers must be accessible via a single public IP address. The web servers listen on different ports in the same machine, with the same local IP address or, possibly, on different machines with different local IP addresses. The reverse proxy analyzes each incoming request and delivers it to the ...

  3. HTTP 404 - Wikipedia

    en.wikipedia.org/wiki/HTTP_404

    For example, Google's 404 page features a broken robot and a link to its homepage, [4] while GitHub's 404 page shows a random image of a parallax star field and a link to its status page. [5] Some websites have also used their 404 pages to showcase their brand personality, humor, or social causes.

  4. List of TCP and UDP port numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_TCP_and_UDP_port...

    Retrieved 2017-04-09. ... refer to the port numbers listed below, which are used when you connect your PS4 system to a PlayStation Network server. TCP: 80, 443, 3478, 3479, 3480. UDP: 3478, 3479. ... ^ "Using Microsoft Outlook Express with Your Email". Help.godaddy.com. 2013-09-18. Retrieved 2013-10-08.

  5. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.

  6. Tor (network) - Wikipedia

    en.wikipedia.org/wiki/Tor_(network)

    This is an accepted version of this page This is the latest accepted revision, reviewed on 28 September 2024. Free and open-source anonymity network based on onion routing This article is about the software and anonymity network. For the software's organization, see The Tor Project. For the magazine, see Tor.com. Tor The Tor Project logo Developer(s) The Tor Project Initial release September ...

  7. Fix problems reading or receiving AOL Mail

    help.aol.com/articles/fix-problems-reading-or...

    Make sure the option "Block All Senders Except Contacts" under "Mail Settings --> Block Senders" is unchecked. If checked, you will not receive messages from anyone not in your contacts. Messages are often delivered right way though very rarely there may be a delay in transit. This is usually due to problems on the mail server, heavy internet ...

  8. Link rot - Wikipedia

    en.wikipedia.org/wiki/Link_rot

    Link rot (also called link death, link breaking, or reference rot) is the phenomenon of hyperlinks tending over time to cease to point to their originally targeted file, web page, or server due to that resource being relocated to a new address or becoming permanently unavailable. A link that no longer points to its target, often called a broken ...

  9. Denial-of-service attack - Wikipedia

    en.wikipedia.org/wiki/Denial-of-service_attack

    A small request to this time server can be sent using a spoofed source IP address of some victim, which results in a response 556.9 times the size of the request being sent to the victim. This becomes amplified when using botnets that all send requests with the same spoofed IP source, which will result in a massive amount of data being sent ...