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How can I crash my router?! Please help!

Discussion in 'Tomato Firmware' started by tunasashimi, May 7, 2007.

  1. tunasashimi

    tunasashimi LI Guru Member

    Hi All

    I am testing a hardware watchdog solution and would like to gather as many possible methods to get WRT54GL's to crash. Please contribute methods you've stumbled on... maybe by outputting nonsense to the wireless driver, or running some bad system calls (I'll compile some source if I have to!)

    I'll post full schematics and components lists... when my solution is bulletproof!

  2. digitalgeek

    digitalgeek Network Guru Member

    The only way I have "Crashed" my wrt's is by overclocking... they are excellent vary stable devices, with the right software, it "virtually" uncrashable...
  3. tunasashimi

    tunasashimi LI Guru Member

    Overclocking... YES! The obvious choice!

    I know that under certaing conditions, when connecting using prism devices, the broadcom driver kicks the router into a kernel panic, inevitably. I have one router that has never been up for longer than 6 days, since I've put it in a spot where it takes connections only from Engenius bridges.
  4. digitalgeek

    digitalgeek Network Guru Member

    I have used "Symbol" integrated devices (with out difficulty)... I was not aware of the prism stuff...
  5. u3gyxap

    u3gyxap Network Guru Member

    If the idea is to make the router to stop responding - just shut down the interfaces:
    ifconfig vlan1 down
    ifconfig vlan0 down

    If you really need to crash it, try to make it use more than 16MB of memory.
    dd if=/dev/mtdblock4 of=<somewhere in ramfs> is a good way to eat up RAM
  6. tunasashimi

    tunasashimi LI Guru Member

    Aah! Fill the RAM! Another brilliant idea! ;D

    We've just added a relays to the DMZ and SES Led's, in order to switch other units on and off with some WRT's. But I would like to test out all hardware crash scenarios so - IE what LED's light up, etc - so that a crash can trigger a power cycle of the device in question too.

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