Slashdot Mirror

← Back to Stories (view on slashdot.org)

How Skype Punches Holes in Firewalls

Posted by CmdrTaco on from the i-thought-it-used-a-hammer dept.

An anonymous reader writes "Ever wondered, how P2P software like Skype directly exchanges data — despite the fact, that both machines are sitting behind a firewall that only permits outgoing traffic? Read about the hole punching techniques, that make a firewall admin's nightmares come true."

7 of 215 comments (clear)

  1. DS by an7ron · · Score: 3, Funny

    I wish my nintendo DS did this, so I could play metroid at work.

    1. Re:DS by MyLongNickName · · Score: 5, Funny

      I wish my nintendo DS did this, so I could play metroid at work.

      And if you could disguise it to look like a cash register, your customers would have no idea you weren't ringing up their Happy Meal.

      --
      See my journal for slashdot ID's by year. Mine created in 2005. http://slashdot.org/journal/289875/slashdot-ids-by-year
  2. Ever wondered by spun · · Score: 5, Funny

    Ever wondered, how to use, commas properly?

    --
    - None can love freedom heartily, but good men; the rest love not freedom, but license. -- John Milton
    1. Re:Ever wondered by Anonymous Coward · · Score: 1, Funny

      No, not really.

    2. Re:Ever wondered by CODiNE · · Score: 5, Funny

      Don't tease, those, who have graduated, from the Shatner, School of Grammar.

      --
      Cwm, fjord-bank glyphs vext quiz
  3. How Skype & Co. get round firewalls by jctull · · Score: 2, Funny

    I always thought of firewalls as being some variation of a rectangle myself, so getting round firewalls would seem to make them easier to circumvent. But if the holes they are punching are round, wouldn't the round firewalls just plug the holes?

  4. Re:Great article by Opie812 · · Score: 3, Funny

    +4 Insightful? How about "-1 RTFA, assface".

    --
    I'm not a nerd. Nerds are smart.