Mailinglist Archive: opensuse-security (520 mails)

[Nix <suse@xxxxxxxxxxxxxxx>]

Yeah,

I guess I knew most of that, I'm still wondering if it's worth running at all
if you don't use NIS, and at what point (if any) it does become worth running.


Nix

At 12:06 AM 19/12/2000 +0100, you wrote:
> Hi.
>
> NSCD stands for name service caching daemon, which is what it does: cache
> name lookups (uid <-> user name, port <-> service name, gid <-> group
> name, you get the feeling). Now, when you use NIS, you have to look up
> every uid, name, gid... on the NIS server, which can take a looong
> time. So those lookups are cached by nscd (easily seen with the following
> command sequence:)
>
> ls -l
> change username in /etc/passwd (which is where uid-username mappings
> reside)
> ls -l again
>
> Hope that explains it a little bit.
>
> Greetings
> olli
>
> On Tue, 19 Dec 2000, Nix wrote:
>
> > Can someone explain the advantage to NSCD in Laymans terms?
> > I'm under the impression after reading man pages etc that it simply
> > caches authentication data for a period of time. Is this correct?
> > I know that I almost always turn it off on servers I build, with no ill-
> > effects. I figgured that it certainly wasn't needed on things like
> > web servers where authentication happens at most once or twice
> > per day. I guess mail servers and shell servers are a different story.
> > I'm just wondering at what point is it actually "worth" running.
> >
> > (*grin* Just thought I'd ask a question for once instead of writing
> > rambling replies..)
> >
> > -Nix
> >
> > At 09:26 PM 18/12/2000 +0000, you wrote:
> > >Hi folks,
> > >
> > >
> > >It may be slightly off topic but I believe this problem belongs in the
> > >SuSE support DB:
> > >
> > >  After adding a user with useradd (or YaST) I tried to set a password
> > >  with passwd, only to receive the reply "unknown user".
> > >
> > >  Searching in my usual source of answers, the suse.de support database,
> > >  gave me no answers, instead a google search (built into opera) pointed
> > >  me towards this article, which mentions nscd as the source of evil:
> > >
> > >  http://archives.neohapsis.com/archives/linux/suse/2000-q1/0328.html
> > >
> > >Would the Suse Team (cheers to them!) be so good as to add this to the
> > >SDB? Although I've found the answer there are most likely others who
> > >are having the same problem!!
> > >
> > >
> > >Regards,
> > >
> > >  Barry
> > >
> > >
> > >
> > >---------------------------------------------------------------------
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> > >For additional commands, e-mail: suse-security-help@xxxxxxxx
> >
> >
>
> --
> --------------------------------------
> Oliver Hensel  <oliver.hensel@xxxxxxx>
>                 http://www.ohensel.de/
>
>         Training + Consulting
>  Unix - Linux - Firewalls - Security
> --------------------------------------
>
>
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> To unsubscribe, e-mail: suse-security-unsubscribe@xxxxxxxx
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