From: Radu Voicu (suseploiesti.rdsnet.ro)
Date: Fri Mar 28 2003 - 07:52:47 CST

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Hi!

I don't know about the osers, but about password length:

Yast - security and users - custom - on the second screen you have the
password length screen

Regards,
Radu

----- Original Message -----
From: "lars" <larsbrainlift.de>
To: <suse-securitysuse.com>
Sent: Friday, March 28, 2003 3:33 PM
Subject: [suse-security] How to handle usernames?

Hi there,

I´ve got a strange behaviour which I want to get rid off ... though it may
not be the right group here:

on a suse linux 8.1 box, doing

useradd -s /bin/false -d /... and-so-on ... b.richards

to add a mailuseraccount, I always got the reply:

invalid username

The same with

useradd -s /bin/false -d /... and-so-on b\.richards

OK, then I´m typing ³useradd brichards², editing the /etc/passwd as well as
/etc/shadow (e.g. setting in the dot manually), then typing in the password,
but then ... the client sometimes gets an errormessage from postfix -
sometimes it works fine.
I found out that in case of unvalid usernames always almost a ³!² is shown
in the second field in /etc/shadow-uservalue-lines (where there have to be
the shadowed password).

everything works fine with usernames without a dot.

I tried hard to find some informations about this, but the only restriction
valid for all shels seemed to be avoiding ³:² and ³/² in usernames.

Anyone a suggestion? would be helpfull... thanx a lot!

greetings

Btw: how can I change the length of a password to a value higher than 8?
Possible at all on a bash or tcsh?

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