userid mapping

userid mapping

[Stefan Palme]

Hello list,

I guess this is a FAQ, but I have not found any information that
helped me out... I'm running a NFSv3-server and clients with linux
kernel 2.6.X. I have the same user-names on both client and server,
but different user-ids. Is it possible to establish a mapping between
the client's and server's userids? 

A link to an earlier discussion of this topic would be enough...

TIA
-Stefan-





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Re: userid mapping

[Peter Staubach]

Stefan Palme wrote:

>Hello list,
>
>I guess this is a FAQ, but I have not found any information that
>helped me out... I'm running a NFSv3-server and clients with linux
>kernel 2.6.X. I have the same user-names on both client and server,
>but different user-ids. Is it possible to establish a mapping between
>the client's and server's userids? 
>
>A link to an earlier discussion of this topic would be enough...
>

There has never really been a standard set for mapping the numerical
userids and groupids.  There have been several implementations which
provided such a mapping, but none ever went very far.

The usual suggestion is to set up Kerberos and use RPCSEC_GSS to
pass the authentication information.

    Thanx...

       ps


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Re: userid mapping

[Stefan Palme]

On Mon, 2005-10-03 at 17:50 -0400, Peter Staubach wrote:
> Stefan Palme wrote:
> >I guess this is a FAQ, but I have not found any information that
> >helped me out... I'm running a NFSv3-server and clients with linux
> >kernel 2.6.X. I have the same user-names on both client and server,
> >but different user-ids. Is it possible to establish a mapping between
> >the client's and server's userids? 
> 
> The usual suggestion is to set up Kerberos and use RPCSEC_GSS to
> pass the authentication information.

Won't this slow down the NFS-performance? Or is the security overhead
for kerberos "ignorable"?

Thanks
-Stefan-





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