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Date:      Sat, 9 Nov 1996 12:50:41 +1030 (CST)
From:      newton@communica.com.au (Mark Newton)
To:        froden@bigblue.no
Cc:        freebsd-security@FreeBSD.ORG
Subject:   Re: NFS Server, is it secure?
Message-ID:  <9611090220.AA12181@communica.com.au>
In-Reply-To: <199611081903.UAA13125@login.bigblue.no> from "Frode Nordahl" at Nov 8, 96 08:02:02 pm

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Frode Nordahl wrote:

 > Starting up an NFS server on a FreeBSD 2.1.5 box, is it secure, given that
 > the configuration is correct?  Are there any known holes other than
 > faulty configuration?

Well, yes -- NFS is basically never "secure" on any platform.  The
NFS protocol was never designed with security in mind.

If you know (or can guess) the NFS filehandle for an NFS filesystem
root then you can spoof the protocol for a start.  

Firewall your NFS server:  Its services should not be reachable from
the Internet-at-large.

    - mark

---
Mark Newton                               Email: newton@communica.com.au
Systems Engineer                          Phone: +61-8-8373-2523
Communica Systems                         WWW:   http://www.communica.com.au



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