[dm-crypt] encrypt NFS

[dm-crypt] encrypt NFS

[Gary Webster]

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Hello.
Sorry if this is a FAQ.  I've done some searching, & didn't find anything
concrete.

How/Can I encrypt an NFS mount (from the client)?

Thanks.

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Re: [dm-crypt] encrypt NFS

[anton ivanov]

Hello,

you can't. Cryptsetup is for encrypting block devices atop of which
file system is created. You have two options:

1) encrypting partiotion/hdd on NFS-server, creating fs on it and set up NFS.
2) you can create file large enough on NFS, make a loop device from it
and encrypt this loop device.

Regards.

ai.

On Fri, Oct 28, 2011 at 01:36, Gary Webster <webster@lexmark.com> wrote:
> Hello.
> Sorry if this is a FAQ.  I've done some searching, & didn't find anything
> concrete.
> How/Can I encrypt an NFS mount (from the client)?
> Thanks.
>
> _______________________________________________
> dm-crypt mailing list
> dm-crypt@saout.de
> http://www.saout.de/mailman/listinfo/dm-crypt
>
>

Re: [dm-crypt] encrypt NFS

[Roscoe]

While I'm not confident of the quality, this would be one of the
places ecryptfs fits into.

On Fri, Oct 28, 2011 at 9:36 AM, Gary Webster <webster@lexmark.com> wrote:
> Hello.
> Sorry if this is a FAQ.  I've done some searching, & didn't find anything
> concrete.
> How/Can I encrypt an NFS mount (from the client)?
> Thanks.
>
> _______________________________________________
> dm-crypt mailing list
> dm-crypt@saout.de
> http://www.saout.de/mailman/listinfo/dm-crypt
>
>

Re: [dm-crypt] encrypt NFS

[Gary Webster]

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Thanks very much for the replies.
That was going to be my next question:  Are there other practical ways to do
this?

So, is ecryptfs no good, & are there any other options?


On Thu, Oct 27, 2011 at 7:06 PM, Roscoe <eocsor@gmail.com> wrote:

> While I'm not confident of the quality, this would be one of the
> places ecryptfs fits into.
>
> On Fri, Oct 28, 2011 at 9:36 AM, Gary Webster <webster@lexmark.com> wrote:
> > Hello.
> > Sorry if this is a FAQ.  I've done some searching, & didn't find anything
> > concrete.
> > How/Can I encrypt an NFS mount (from the client)?
> > Thanks.
> >
> > _______________________________________________
> > dm-crypt mailing list
> > dm-crypt@saout.de
> > http://www.saout.de/mailman/listinfo/dm-crypt
>

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Re: [dm-crypt] encrypt NFS

[Arno Wagner]

Dependst on your threat model. You could tunnel unencrypted NFS over some
VPN tunnel (open VPN, e.g.).  You could do a network-block-device export,
whoch should be encryptable in the standard way.  You could export NFS with
a file in it and have that file contain an encrypted LUKS container that
gets loop-mounted on the target.  I am sure other options exist.

So ask yourself:

- What does the attacker have access to?
- What can the attacker do at the access point? (With regard to his 
  capabilities.)
- Does this need to be exported to one or several targets?
- Does the exporting host need access to the exported data?

Arno

On Thu, Oct 27, 2011 at 07:09:19PM -0400, Gary Webster wrote:
> Thanks very much for the replies.
> That was going to be my next question:  Are there other practical ways to do
> this?
> 
> So, is ecryptfs no good, & are there any other options?
> 
> 
> On Thu, Oct 27, 2011 at 7:06 PM, Roscoe <eocsor@gmail.com> wrote:
> 
> > While I'm not confident of the quality, this would be one of the
> > places ecryptfs fits into.
> >
> > On Fri, Oct 28, 2011 at 9:36 AM, Gary Webster <webster@lexmark.com> wrote:
> > > Hello.
> > > Sorry if this is a FAQ.  I've done some searching, & didn't find anything
> > > concrete.
> > > How/Can I encrypt an NFS mount (from the client)?
> > > Thanks.
> > >
> > > _______________________________________________
> > > dm-crypt mailing list
> > > dm-crypt@saout.de
> > > http://www.saout.de/mailman/listinfo/dm-crypt
> >

> _______________________________________________
> dm-crypt mailing list
> dm-crypt@saout.de
> http://www.saout.de/mailman/listinfo/dm-crypt


-- 
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno@wagner.name 
GnuPG:  ID: 1E25338F  FP: 0C30 5782 9D93 F785 E79C  0296 797F 6B50 1E25 338F
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