Bugtraq mailing list archives
Re: R. Thomas's NFS question
From: marekm () i17linuxb ists pwr wroc pl (Marek Michalkiewicz)
Date: Wed, 10 May 1995 16:39:58 +0200 (MET DST)
PETER.T.WHITING () sprint sprint com:
R. Thomas> hostA --> exports /usr/share to -access=hostB R. Thomas> hostB --> a linux box. re-exports /usr/share to everyone R. Thamas> hostC --> not implicitly trusted by hostA, mounts /usr/share
[ ... ]
Not a problem. Host C gets to look at ***HostB's*** /usr/share - the one that has HostA's /usr/share mounted over it, not HostA's /usr/share. NFS gives you a single hop. In the above example HostA could then mount (if perms were granted) HostC's /usr/share and everything would work.
The NFS server on Linux is a bit different from that on other systems - hostC will see hostA's /usr/share re-exported. But this is true only if nfsd on hostB was started with the -r (--re-export) option. By default, re-export is disabled and hostC will just see an empty directory. This is recommended - otherwise if hostA goes down, nfsd on hostB will hang because it can only process one request at a time. The Linux NFS server certainly is not the best one, but it is being worked on. If you are still running version 2.0, please upgrade now - it has serious bugs. The latest version (maintained by Olaf Kirch) is 2.2alpha6, available at ftp://linux.nrao.edu/pub/people/okir/nfsd/ Regards, -- Marek Michalkiewicz <marekm () i17linuxa ists pwr wroc pl>
Current thread:
- Re: impossible vs. impractical, (continued)
- Re: impossible vs. impractical Perry E. Metzger (May 08)
- Re: impossible vs. impractical Dr. Frederick B. Cohen (May 08)
- Re: impossible vs. impractical Mike O'Connor (May 10)
- password backdoors System Admin (May 10)
- Error in the Lorenz-Fitzgerald assumption. A. Padgett Peterson, P.E. Information Security (May 10)
- Re: password backdoors Nathan Lawson (May 10)
- Re: impossible vs. impractical Perry E. Metzger (May 10)
- and now, back to your regularly scheduled discussion topic... robert owen thomas (May 08)
- Re: impossible vs. impractical Aleph One (May 08)
- R. Thomas's NFS question PETER.T.WHITING () sprint sprint com (May 09)
- Re: R. Thomas's NFS question Marek Michalkiewicz (May 10)
- RE: Anon site needed for FIP[S] PUB 190 Lawrence E. Bassham (May 09)
- unsubscribe bugtraq parkerm@cs49.holloman ParkerM,TSgt,49CS/SCSC (May 09)
- Please, please, _please_ (was Re: impossible vs. impractical) G.J.W. Hagenaars (May 08)
- Re: Please, please, _please_ (was Re: impossible vs. impractical) ATM_Feel_the_Power (May 09)
- Re: impossible vs. impractical John F. Haugh II (May 10)
- Re: impossible vs. impractical Tom Ptacek (May 14)
- Re: impossible vs. impractical jon (May 14)
- Re: impossible vs. impractical Tom Ptacek (May 14)