Hi Raymundo,
>
> in MD5 $1$ is always present, the 8 char string that folows is
> the salt and the last 22 chars is the encrypted password.
What is this 'salt' thing?

>
> For DES the first two char is the salt and the last 11 is the
> encrypted password.
>
> and if both systems use the same encryption, just copying password
> files should work fine.
>
> hope it helps
>
> raymundo
>
> nate wrote:
>
> > Bruno Negrao said:
> >
> >> Hi all, I have a redhat 6.0 running a radiusd server to authenticate my
> >> RAS dialin users.
> >> I'll deactivate this machine.
> >>
> >> So, I need to migrate this users to a redhat 8.0 machine, already
running
> >> with Qmail + Vpopmail.
> >>
> >> How to migrate all these dialin users from one machine to the other? If
I
> >> cut and paste the cryptographic password from the /etc/shadow file,
would
> >> it effectively copy the password?
> >
> >
> > yes it will, I've done this many times. This will only work if both
systems
> > are using the same encryption type. The most common options are hash and
> > MD5. The "format" of the password is significantly different between the
> > 2 so it should be obvious whether or not both systems are using the
same.
> > MD5 typically has a lot of upper case characters and is much longer then
> > crypt, maybe 20-30 characters, crypt is very short(maybe 10 tops). And
while
> > I haven't tried this it may work, if you need to revert from MD5 to
> > crypt grep the files in /etc/pam.d and remove the 'md5' from them, on my
> > redhat 7.3 system the only file that has it is system-auth, also looks
like
> > there is an /etc/sysconfig/authconfig file that would need to be changed
too.
> >
> > nate
>
>
>
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