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World's Smallest Linux Box Fits in RJ-45 Jack

An anonymous reader writes "German electronics company Kleinhenz is shipping a network-enabled Linux system built into an RJ-45 Ethernet jack. "Picotux" has a 55MHz ARM processor, 2MB of Flash, 8MB of RAM, a serial port, and five lines of GPIO. It measures 0.75 x 0.75 x 1.4 inches (19 x 19 x 36mm), and weighs 0.64 ounces (18 grams), packaged in a metal housing. A wireless 802.11 version appears to be on the horizon, too. So, if you've ever wanted to network-enable, say, a robot, boombox, or model airplane, this could be the system for you." Is this really the world's smallest? It looks a bit chunkier than a tiny gumstix machine.

20 of 347 comments (clear)

  1. Breaking the law, breaking the law by tepples · · Score: 5, Insightful

    True, it's no workstation, but still the specs are enough to leak trade secrets across the Internet, and the size is such that the bug may go unnoticed by your employer's IT maintenance department. So if you are infiltrating an "evil" company and you value your afterlife more than you value your life, go for it!

    1. Re:Breaking the law, breaking the law by rudeboy1 · · Score: 4, Insightful

      The security implications for this are mind boggling. Especially a wireless version. Add in a second female jack, or a punch board, and you have a device that can be installed in a local network wall jack without detection. If one were to load in a proprietary (non-802.11)wireless protocol, like K2 or a Mesh variant, (which won't take up a whole lot more space on a ROM chip than a standard 802.11 protocol) the wireless signal would not show up on most wireless detection software, (netstumbler, etc.) You got yourself a pretty scary little device there, or a fun one, depending on what end of this thing you're looking at.

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  2. Firewall in the port by Anonymous Coward · · Score: 5, Insightful

    Sounds like a cool way to firewall individual rooms or areas.

    1. Re:Firewall in the port by bob@dB.org · · Score: 2, Insightful

      What good is a firewall with only one Ethernet port?

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  3. Mirrordot link by PxM · · Score: 1, Insightful

    http://www.mirrordot.org/stories/7a619ff68b3628144 0ce8c14d21197d5/index.html IMO, the Wi-Fi model they have there looks more interesting than the wired one. Hopefully, they'll get picoTux to work on that and be able to make the antenna less clunky.

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    Wired article as proof

  4. This could be... by SlashThat · · Score: 3, Insightful

    Great as a wiretapping device! ;)

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    1's and 0's should be free.
  5. Cool, but... by nweaver · · Score: 4, Insightful

    The wireless version is cool as well, but the systems need two more things:

    a: For the wired version: Support for Power over Ethernet. This way, separate power isn't needed in many installations.

    b: A single USB port for both versions.

    Do those both and you now have a general purpose wired and wireless glue for attaching pretty much arbitrary devices to the network.

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  6. Re:Oh, quite cool! by tmasky · · Score: 2, Insightful

    Off the top of my head..

    -Port scan to find local e-mail server
    -Arp spoof e-mail server
    -Port scan to find local proxy server if no direct net access
    -HTTP PUT proxied email data to website x

    Ok, there's lots of conditions and many different implementations. I'm just trying to point out that local storage is not necessary - or probably wanted.

  7. Battery? by Speare · · Score: 2, Insightful
    It says it draws 3.3v 250mA power. It would be an excellent design if it could get its own power needs from the Cat5 cable itself. Just plug a personal key fob into your network, let it dhcp itself, and do whatever else from there.

    As it is, it looks like you'd have to provide power to the unit from other means?

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  8. Cool Idea. by bigattichouse · · Score: 4, Insightful

    Now, take two and put them back to back running a variant of iptables/whatever to build a "on the cable" firewall.

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    meh
    1. Re:Cool Idea. by niteice · · Score: 2, Insightful
      No, what's needed is an advancement in the chip at the center of this device. Currently it only has one MAC and PHY for ethernet. The next evolution of this chip should have 2 MAC/PHY. Package it in a metal case with RJ-45 at *both* ends and flash a minimal Linux+FW into it.
      I smell best damn firewall ever.
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  9. Re:Exoensive. by solios · · Score: 2, Insightful

    Yeah, you can get a hell of a lot more bang for that buck, but can you fit that bang up your bung?

    I doubt it. You're paying for the size here, and if you don't need the size, then who cares what the price is?

  10. Re:Good Example of Why This Thing is Useful by HyperChicken · · Score: 2, Insightful

    That's why God invented USB: So you can plug stuf into other stuff.

    This device doesn't really allow for plug-and-play networking.

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  11. Mac zealot response: by Anonymous Coward · · Score: 1, Insightful

    "So what if it's a lot smaller than a Apple Mac Mini. It isn't nearly as powerful and doesn't look as sleek and aesthetically pleasing as my Mac Mini. When will these Wintel companies stop trying to copy Apple's brilliant and groundbreaking innovations and innovate themselves for a change?"

    Did I leave anything out?

  12. Ugh, only one nic? by Anonymous Coward · · Score: 1, Insightful

    What use is it intended for? Seems to me the market for things like this would be a firewall yet they always manage to screw it up by only putting one nic in.

  13. Re:Expensive. by WebCowboy · · Score: 5, Insightful

    but I can go buy a cheap desktop for that

    Just because you can doesn't mean you should. This is an embedded systems solution, not a desktop replacement. If you play in that world than you knwo 100 euros is quite inexpensive.

    The PC is just too big, too fragile, too power-hungry and too unreliable for a lot of tasks where these tiny machines could be used--even if the computational power-to-price ratio is so much larger for the PC. People in the automation world probably remember a few years ago how the PC-based "soft PLC" would reduce costs and replace all those proprietary, expensive traditional PLCs. Never happened and never will because PCs are too general purpose and inefficient. To this day all I've ever used software-based PLCs for is simulation.

    For those who are unaware, PLCs, or Programmable Logic Controllers, are esentially purpose-built embedded computer systems used to monitor and control industrial equipment. The bulk of them today are about as powerful as a 286 PC or even less and they cost as much as or more than a high-end PC. Despite that, the hardware and firmware/software in a PLC is designed from the ground up for deterministic, hard-real-time operation and I/O intensive applications. They also do not have processor fans, hard drives and other unreliable mechanical parts.

    That is why these tiny Linux machines are so interesting--even if they cannot do as much as a PC or are more expensive. They could be the beginning of a standard, truly open platform for embedded systems. If the processor unit can fit in an RJ45 jack, then in the future we could do away with racks of PLCs and make field equipment control itself. The stuff I can imagine is mind boggling to say the least.

  14. small == expensive by Mr.+Underbridge · · Score: 4, Insightful
    99?! Okay, so it's not that expensive. 55Mhz processor, 2MB flash, 8MB RAM, serial port, 10/100 Ethernet... but I can go buy a cheap desktop for that. I hope it gets substantially cheaper with volume. If not, they're making a killer profit.

    Wow, I guess every laptop in the world is also overpriced, being less powerful and more expensive than a similar desktop.

    Mods are sniffing glue today...

  15. Re:amazing possibilites by vtolturbo · · Score: 2, Insightful

    well, that may be true, but until the mesh topology network technology becomes more popular and more advanced, we're still at the mercy of the network. in a large network of small processing cores, the importance of network integrity is significantly greater than in smaller networks, especially if redundant systems share a common network. if a switch dies, the potential for stranded data is larger if there are more nodes connected through that switch.

    this all begs the question of when this technology will be applied to neural networks and artificial intelligence.

  16. Re:Finally! by Short+Circuit · · Score: 2, Insightful

    I like it!

    Separate firewall behavior for the AP in the kid's bedroom (or the parent's bedroom) from the rest of the house. That is, logging certain activity to another machine on the network. syslog is such a flexible tool...

  17. Re:Exoensive. by ceeam · · Score: 2, Insightful

    Forget desktop. I can buy plenty of beer for that! Who needs a desktop when they could buy _beer_!

    See the point?