[SOLVED] r47745 upgrade issue -- mod note passwords

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MondayC
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Joined: 15 Oct 2012
Posts: 10

PostPosted: Wed Dec 08, 2021 14:01    Post subject: [SOLVED] r47745 upgrade issue -- mod note passwords Reply with quote
Hello,
Yesterday i updated the DD-WRT version for my Linksys ACS 1900 router, from build 44715 to build 47745.
Everything went ok (30/30/30 before flashing and also before reconfiguration), up till the login screen.
The typed user name and password don't seem to work. I thought maybe i made some mistakes along.
I reset (30/30/30) the router again and proceeded with changing the user name and password.
Same thing happened, i can't log in!

After about 5 resets, the web interface will not load (blank page).
At this point, i thought i have somehow botched the flashing and bricked the router.

Tftp recovery attempts:
I opted for the tftp recovery method as i still could seccessfuly ping the router.
However, things didn't go as expected. No data transfer to the router. The tftp (tftpd64) application was taking forever.
Switched "tftpd64" for "Firmware Upgrade Utility_v3.6.10" witch gave me a hint that Windows OS firewall could interfere with the transfer and should be disabled.
I disabled Windows as well as Kaspersky Firewalls. To no avail. The "new" tftp app will just time out.

In between multi-multi resets and Tftp recovery attempts, i launched Chrome browser (instead of my usual Firefox), lo and behold, the login page was accessible.
I quickly put short and easy password (A-Z 0-9) and got access !

It seems that very long and complex passwords will get truncated at saving. My initial password was a mix of 70 characters (!$µ*@=ç^/ ...). Now its just 30, with no special characters.

Is my assumption true ? anyone experienced something similar with regards to password length and complexity ?

Thanks
Sponsor
ho1Aetoo
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Joined: 19 Feb 2019
Posts: 2899
Location: Germany

PostPosted: Wed Dec 08, 2021 14:05    Post subject: Reply with quote
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=328775

That changed at some point.
But you can still use complex passwords with the invalid characters in a roundabout way.
MondayC
DD-WRT Novice


Joined: 15 Oct 2012
Posts: 10

PostPosted: Wed Dec 08, 2021 14:13    Post subject: Reply with quote
Thank you for the link ho1Aetoo.
Could have saved me a day, had i taken time to research before upgrading.

Thanks
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 12812
Location: Netherlands

PostPosted: Wed Dec 08, 2021 14:53    Post subject: Reply with quote
After 5 failed login attempts there is a 5 minute time out I think
_________________
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Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
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MondayC
DD-WRT Novice


Joined: 15 Oct 2012
Posts: 10

PostPosted: Wed Dec 08, 2021 15:24    Post subject: Reply with quote
I would make about only 2 login attempts before resetting the whole thing over.
Is the result of a timeout after 5 login attempts a blank page /not loading web interface ?

The failed tftp recoveries also got me worried. Could have waited hours long had it not been the monitoring of the com between the pc and the router.
Still don't know why it/i failed miserably.

Got myself a "proper" serial cable, for next time.

Thanks
the-joker
DD-WRT Developer/Maintainer


Joined: 31 Jul 2021
Posts: 2146
Location: All over YOUR webs

PostPosted: Wed Dec 08, 2021 16:39    Post subject: Reply with quote
egc wrote:
After 5 failed login attempts there is a 5 minute time out I think

You think correctly =)
MondayC wrote:
I would make about only 2 login attempts before resetting the whole thing over.
Is the result of a timeout after 5 login attempts a blank page /not loading web interface ?
Thanks


Yes, you are blocked so you cant load anything until timeout is done...

You can login via ssh/telnet fine though and reboot or restart httpd and cancel the timeout that way.

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MondayC
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PostPosted: Wed Dec 08, 2021 17:56    Post subject: Reply with quote
@the-joker, thank you very much for your input, it helped me understand what i experienced.

Thanks
the-joker
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PostPosted: Wed Dec 08, 2021 18:11    Post subject: Reply with quote
You are indeed, very welcome.

Would you consider your main issue has been solved? If not, what else can we help with?

Take care now, alrighty then...

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MondayC
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Joined: 15 Oct 2012
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PostPosted: Wed Dec 08, 2021 18:24    Post subject: Reply with quote
Issue solved ! totally satisfied with the replies.
Thanks to all for your inputs.

Thanks
the-joker
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PostPosted: Wed Dec 08, 2021 18:41    Post subject: Reply with quote
You're welcome again.

Ive received a obvious recommendation that we should notify some password characters are not accepted via web interface, but IMO unless there is some kind of blocking issue the best UX is to support all characters in passwords and any length.

That failing, yes I agree that some sort of notification should be show to e user upon detecting invalid characters.

Have forwarded this to the flying spaghetti monster as a wish.

Lets see what happens =)

Take care now, alrighty then =)

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MondayC
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Joined: 15 Oct 2012
Posts: 10

PostPosted: Wed Dec 08, 2021 19:39    Post subject: Reply with quote
the-joker wrote:


Have forwarded this to the flying spaghetti monster as a wish.

Lets see what happens =)

Take care now, alrighty then =)


Please add to the forward note that im one of his disciples and that no day goes by without me singing his gospel and preaching about his glory.

Thanks

Proof attached Rolling Eyes
the-joker
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PostPosted: Wed Dec 08, 2021 21:08    Post subject: Reply with quote
The flying spaghetti monster does not require proof that pasta is all carbs. Its fact.
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SurprisedItWorks
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Joined: 04 Aug 2018
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PostPosted: Thu Dec 09, 2021 3:13    Post subject: Reply with quote
And for future incidents, remember the words of the Glorious FSM: "Thou shalt not do 30/30/30 except in search of expensive bricks."

See Cliff Notes sticky and many other forum mentions. Folklore has it that 30/30/30 is for much older hardware and is not compatible with the WRT* routers of recent years. (Prophet KP69: any wisdom to add?)

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kernel-panic69
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PostPosted: Thu Dec 09, 2021 3:44    Post subject: Reply with quote
SurprisedItWorks wrote:
(Prophet KP69: any wisdom to add?)

I'm having to refrain from a joke here due to the forum rules... Rolling Eyes
You covered everything pretty well, but I will add, "Stickies,
announcements, and build release threads are your friend.
The router database is not." Cool

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blkt
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Joined: 20 Jan 2019
Posts: 5650

PostPosted: Thu Dec 09, 2021 4:52    Post subject: Reply with quote
Modern routers are only hold 5 to 10 seconds while powered on after full boot with few exceptions like ASUS.

WRT1200AC, WRT1900AC, WRT1900ACS, WRT3200ACM, WRT32X: hardware reset is hold reset 10 seconds.
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