sshd: solution to the SID change problem ?

Igor Pechtchanski pechtcha@cs.nyu.edu
Fri Dec 2 15:25:00 GMT 2005


On Fri, 2 Dec 2005, Ludovic Drolez wrote:

> Corinna Vinschen wrote:
> > On Dec  2 12:50, Ludovic Drolez wrote:
> >
> > > Hello,
> > >
> > > Since I do not want to update '/etc/passwd' each time the SID changes
> > > (sysprep deployment for example), I wanted to know if I can modify my
> > > /etc/passwd like this:
> > >
> > > Administrator:unused_by_nt/2000/xp:544:544:U-Administrator,S-1-5-32-544:/home/Administrator:/bin/bash
> > >
> > > Or assign any other well know SID to the user ? S-1-5-18 ?
> > >
> > > Sshd seems to work well, but does it have any side effects on cygwin and
> > > windows?
> >
> >
> > You can hurt your /etc/passwd as you like as long as it works.  It
> > won't affect native Windows apps usually, unless you make some bad
>
> So having the same SID for the user and unix group won't make cygwin (and
> windows) go crazy ?

AFAIK, Windows groups are actually compound users.  As long as the SID you
use in both /etc/passwd and /etc/group belongs to a Windows group, you
should be ok.  I don't know what will happen with a user's SID (this
actually is a question to Corinna, since ACL and group ownership mapping
happens within Cygwin).
	Igor
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