nanog mailing list archives

Re: Yondoo provided router, has "password" as admin pw, won't let us change it


From: Josh Luthman <josh () imaginenetworksllc com>
Date: Wed, 8 Feb 2023 11:06:07 -0500

What's the problem with double NAT?  I can't imagine an elderly mom trying
to host Xbox games - which is 95% of the problem with double NAT these days
(the other 5% being Ubiquiti bros having to access their Unifi router from
anywhere).

Your screenshots didn't come through, I suspect it's stripped via the
mailing list, but there's no model number specified anywhere.

NANOG really isn't the best place for this, but I don't know where else you
would be able to go besides what you've already done:  Yondoo support.

On Tue, Feb 7, 2023 at 9:17 AM TACACS Macaque via NANOG <nanog () nanog org>
wrote:

Hi,

Long time lurker, first time poster. Sorry in advance if this is the wrong
forum for something like this.

My mom's ISP (Yondoo) seems to be providing DOCSIS 3.1 CPE (Customer
Premises Equipment) with a built-in router, without providing the ability
to change the admin password from "password" on it.

[image: Screenshot 2023-02-03 at 9.49.15 PM.png]

​[image: Screenshot 2023-02-03 at 9.51.51 PM.png]

Their customer service rep said that this is not only WAI, but also wanted
to charge her $50 to have a tech come out and change it. Which is obviously
less than ideal.

That aside, this seems like a pretty egregious security standard which,
from my understanding, can have fairly dire security implications... e.g.,
DNS server settings can be pointed at whatever someone wants here.

My mom is elderly and had already fallen victim to a call center scammer a
couple years ago. They briefly took control over her laptop before she
called for backup. So I'm just a little concerned that we have no control
over changing this router's admin password — from “password” — in a pinch,
without waiting for a truck roll && shelling out $50.

I've sent her a DOCSIS 3.1 modem that doesn't have a router built-in, in
hopes that they'll let us bring our own. She does have Google Wifi, but we
can't even put their router into bridge mode. So she would be double NATed
*and* have no control over changing the admin password on the first
router.

Anyone have any experience with Yondoo? I've tried reaching out to them on
multiple fronts, but have yet to hear back from them on this. A tech is
scheduled to come out tomorrow, so the plan is to beg (bribe?) them to let
us use our own modem and then take it from there.

Thanks,
Todd


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