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  2. 2021 Facebook outage - Wikipedia

    en.wikipedia.org/wiki/2021_Facebook_outage

    By 15:50 UTC, Facebook's domains had expired from the caches in all major public resolvers. A little before 21:00 UTC, Facebook resumed announcing BGP updates, with Facebook's domain name becoming resolvable again at 21:05 UTC. [14] On October 5, Facebook's engineering team posted a blog post explaining the cause of the outage.

  3. Why do I get a dark gray screen when trying to sign in to ...

    help.aol.com/articles/why-do-i-get-a-dark-gray...

    2. When you get the pop-up notification asking would you be willing to accept all Facebook notifications, click "No." That should do the trick. Close the browser and re-launch AOL Shield Pro. Now you should be able to sign in to Facebook.

  4. Anonymous proxy - Wikipedia

    en.wikipedia.org/wiki/Anonymous_proxy

    An anonymizer or an anonymous proxy is a tool that attempts to make activity on the Internet untraceable. It is a proxy server computer that acts as an intermediary and privacy shield between a client computer and the rest of the Internet .

  5. HTTP 404 - Wikipedia

    en.wikipedia.org/wiki/HTTP_404

    The HTTP specification suggests the phrase "Not Found" [1] ... If the proxy server is unable to satisfy a request for a page because of a problem with the remote host ...

  6. Censorship by Facebook - Wikipedia

    en.wikipedia.org/wiki/Censorship_by_Facebook

    Those trying to post the article were informed by Facebook that people who repeatedly share "false information" might have their posts moved lower in Facebook's News Feed. Group administrators where the article was shared received messages from Facebook informing them that such posts were "partly false." Readers were directed to a "fact check ...

  7. Proxy ARP - Wikipedia

    en.wikipedia.org/wiki/Proxy_ARP

    Proxy ARP is a technique by which a proxy server on a given network answers the Address Resolution Protocol (ARP) queries for an IP address that is not on that network. The proxy is aware of the location of the traffic's destination and offers its own MAC address as the (ostensibly final) destination. [1]

  8. Squid (software) - Wikipedia

    en.wikipedia.org/wiki/Squid_(software)

    The LAMP stack with Squid as web cache.. Squid is a caching and forwarding HTTP web proxy.It has a wide variety of uses, including speeding up a web server by caching repeated requests, caching World Wide Web (WWW), Domain Name System (DNS), and other network lookups for a group of people sharing network resources, and aiding security by filtering traffic.

  9. Internet censorship circumvention - Wikipedia

    en.wikipedia.org/wiki/Internet_censorship...

    Open public proxy sites do not provide anonymity and can view and record the location of computers making requests as well as the websites accessed. [ 4 ] In many jurisdictions accessing blocked content is a serious crime , particularly content that is considered to be child pornography , a threat to national security , or an incitement of ...