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Article #3170

Re: Bypassing password on old Sparc IPC??

#3170
From: Craig Dewick
Date: Sun, 01 Jun 1997 00:00
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In <chergr.1215541143B@news.latrobe.edu.au> chergr@lure.latrobe.edu.au (Richard Rothwell) writes:

>I purchased a Sparcstation IPC at auction, just in case the big Sun monitor
>I bought did no work on my Mac, and I am trying to get it up and running.

>I was told, I think, that to bypass the normal password I had to get into
>single user mode by doing stop A and then in the forth monitor doing boot
>-s. Then hopefully I can get at the file system and delete the entry in the
>password file.

>Trouble with this advice was that single user mode also asks for a password.

Booting single-user always asks for a root password if one is set in
/etc/shadow. This is actually a good security feature, since you'll remember
that on SunOS 4.1.x systems, the root password is always ignored during
single-user boot. 8-) 

>Now I did a lot of digging in the FAQs and came up with the hypothesis that
>the security was set in the NVRAM. So a bought a NVRAM, did the set defaults
>stuff and re-entered the idprom data. No go!! It still asks for a password. 

There is an 'IDPROM' password which is used to restrict access to various
groups of monitor commands. This is different to the root password stored in
/etc/shadow, but they can be set to the same string.

>Just to confuse the issue the contents of the NVRAM do not appear to match
>that described in the FAQs.

Check Mark Henderson's Sun NVRAM/hostID FAQ at
'http://www.rahul.net/squirrel/sun-nvram-hostid.faq.html' for complete
details about the layout oof the data stored in the first 'IDPROM' section
(first 32 bytes) of the NVRAM. It's correct since I use the info from the
FAQ for programming new NVRAM's when I need to.

Regards,

Craig.
-- 
            Craig Dewick. Send email to 'cdewick@lios.apana.org.au'
   Point a web browser at 'http://lios.apana.org.au/~cdewick/sun_ark.html' to
       access my collection of Sun information and links to other places.
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From: cdewick@lios.apana.org.au (Craig Dewick)
Subject: Re: Bypassing password on old Sparc IPC??
Date: 1997/06/01
Message-ID: <5mruc3$jlc$1@lios.apana.org.au>
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