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    1. #1
      What's up <span class='glow_006400'>[SomeGuy]</span>'s Avatar
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      BREAKING NEWS: AT&T Blocks img.4chan.org

      Oh god. Censorship, or AT&T helping with a DDoS? The thought of an ISP helping with a DDoS by blocking all traffic, without contacting the system admin? Ha.

      And it's the admin of 4chan. Good luck, AT&T.


      But, Net Neutrality? Communism?

      Links:
      http://pastebin.com/f299e40db
      http://encyclopediadramatica.com/AT%...n#THIS_JUST_IN
      http://www.reddit.com/r/reddit.com/c...o_img4chanorg/
      http://www.inquisitr.com/30689/censo...locks-4chan-b/
      http://mashable.com/2009/07/26/repor...locking-4chan/
      http://tech.slashdot.org/story/09/07...-Part-of-4chan

      And even a twitter search: http://search.twitter.com/search?q=AT%26T



      Within 4 hours, the /b/tards found AT&T CEO's name, contact info, picture of his house, address, wife's name, and a Google Streetview image of his house...With that power, I expect a good fight.

      Censorship is bad.

      Hey guys, I'm back. Feels good man
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    2. #2
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      I thought that thing wasn't operational?!

    3. #3
      FBI agent Ynot's Avatar
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      I don't think this can be called censorship
      This is damage control from AT&T

      Someone was DDOS'ing 4chan with spoofed IP's (IP's belonging to AT&T)

      When you contact a server over TCP/IP,
      - You first send a SYN packet - I want to talk to you
      - The server will respond with a SYN-ACK packet - I'm ready to talk
      - Finally, you respond with an ACK packet - Ok, here it comes
      - Then the actual data packets start flying around

      If you spoof your source IP, the server will send it's SYN-ACK packets to the spoofed IP (who has no idea what to do with them, as they didn't ask for a conversation)
      So, the spoofed client will just drop the packet

      The server, having not received an ACK, will resend (up to 4 times) the SYN-ACK packet

      DDOS'ing 4chan with spoofed IP's will result in the spoofed network (AT&T) being DOS'ed by the server (4chan)

      This secondary, by-product DOS of the original DDOS, will potentially be up to 4 times as much as the original DDOS on 4chan

      a simple (albeit crude) solution for AT&T, is to just block the IP from 4chan
      (\_ _/)
      (='.'=)
      (")_(")

    4. #4
      What's up <span class='glow_006400'>[SomeGuy]</span>'s Avatar
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      Well, yes. That's one of the main rumors floating around. But, AT&T would have to contact 4chan's admins before doing that, and cutting access all of a sudden.

      "moot" said AT&T never contacted him.

      Hey guys, I'm back. Feels good man
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    5. #5
      FBI agent Ynot's Avatar
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      Quote Originally Posted by [SomeGuy] View Post
      Well, yes. That's one of the main rumors floating around. But, AT&T would have to contact 4chan's admins before doing that, and cutting access all of a sudden.

      "moot" said AT&T never contacted him.
      Why would they have to contact anybody?

      I've got a similar setup on my network
      If I get flooded with bogus TCP packets, I block the source IP (only for a few hours)
      It's all automated and is a crude, but effective way to nip DOS attacks in the bud
      (\_ _/)
      (='.'=)
      (")_(")

    6. #6
      What's up <span class='glow_006400'>[SomeGuy]</span>'s Avatar
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      But AT&T blocking a server without contact?

      Hey guys, I'm back. Feels good man
      ---------------------------------------------------
      WTF|Jesus lul
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