TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC

No more default password for new PWs?

Discussion in 'Tesla Energy' started by MikeBur, Aug 5, 2018.

  1. MikeBur

    MikeBur ManualPilot

    Joined:
    Dec 8, 2014
    Messages:
    1,045
    Location:
    Seattle, WA
    Just had install done. Trying to connect to backup gateway via LAN and S<serial_num> doesn’t work as default password. The password *does* work for WiFi password for TEG_xxx AP. No joy for installer or customer login.

    FW: 1.21

    There is option to “reset forgotten password”, though didn’t want to mess anything up in my ignorance ;)

    It is highly likely I’m doing Something dumb here, though is it possible/feasible that the default password is no more? DM if needed :)
     
  2. Sylvia Else

    Sylvia Else Member

    Joined:
    May 28, 2018
    Messages:
    85
    Location:
    Sydney
    There was supposed to be some issue with people being able to adjust the settings of your powerwall using WiFi from the street, if they knew your system's serial number (by trespassing once, and reading it, I suppose). The new passwords appear intended to prevent that, but resetting them just requires knowledge of the serial number. There's some mention of turning the powerwall off and on at the switch, but I don't seem to have needed to do that. In any case, if your powerwall's outside (mine's in the garage), then a tresspasser can switch it off and on, and then reset the password. Unless you're one of the relatively rare users who's using the web interface, you'd never notice.

    I think Tesla have thought "there's, a problem, we must do something..... this is something, so we must do it." without really thinking the issue through.

    The switch to https doesn't seem to have achieved much if anything either.

    Resetting the password is harmless.
     
  3. cwied

    cwied Member

    Joined:
    Jan 13, 2015
    Messages:
    348
    Location:
    San Mateo, CA
    I haven't tracked down exactly when the Powerwall is in a "trusting" mode and when not (maybe it has to do with when the last time is the installer authenticated), but under normal operation I've definitely had to toggle the Powerwall switch to do a password reset.

    I actually think this is a reasonable security precaution as a significant number of installs will be in garages or in other "secure" areas, so it does have a benefit to at least a portion of their user base. It's much harder to secure a device to which the attacker has physical access in any case.

    The switch to https means that the password is doubly encrypted so a WPA attack isn't sufficient to sniff the password (if you're authenticating over wireless). I think it's not too extraordinary to see this kind of security layering, although I do wonder why they thought it was necessary. Maybe it has something to do with the virtual power plant installations.
     
  4. MikeBur

    MikeBur ManualPilot

    Joined:
    Dec 8, 2014
    Messages:
    1,045
    Location:
    Seattle, WA
    Thanks both. Good to know. I couldn’t find a link with walkthrough if installer options anywhere. The ominous, ye’ll reset everything if ye enter here is definitely offputting ;)
     
  5. wwhitney

    wwhitney Member

    Joined:
    Nov 2, 2017
    Messages:
    253
    Location:
    Berkeley, CA
    Check out this thread: Powerwall Wizard

    Cheers, Wayne
     
    • Like x 1
  6. MikeBur

    MikeBur ManualPilot

    Joined:
    Dec 8, 2014
    Messages:
    1,045
    Location:
    Seattle, WA
    Perfect, thanks
     

Share This Page

  • About Us

    Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.
  • Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


    SUPPORT TMC