forked from pool/util-linux
52 lines
2.1 KiB
Diff
52 lines
2.1 KiB
Diff
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From: http://www.citi.umich.edu/projects/nfsv4/linux/util-linux-patches
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Subject: Update nfs(5) manpage to document security flavors
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References: 159368
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Acked-by: okir@suse.de
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mount/nfs.5 | 24 ++++++++++++++++++++----
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1 files changed, 20 insertions(+), 4 deletions(-)
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Index: util-linux-2.12r/mount/nfs.5
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===================================================================
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--- util-linux-2.12r.orig/mount/nfs.5
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+++ util-linux-2.12r/mount/nfs.5
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@@ -128,7 +128,7 @@ mount daemon program number.
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Use an alternate RPC version number to contact the
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mount daemon on the remote host. This option is useful
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for hosts that can run multiple NFS servers.
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-The default value is version 1.
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+The default value depends on which kernel you are using.
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.TP 1.5i
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.I nfsprog=n
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Use an alternate RPC program number to contact the
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@@ -193,9 +193,25 @@ Suppress the retrieval of new attributes
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.TP 1.5i
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.I noac
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Disable all forms of attribute caching entirely. This extracts a
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-server performance penalty but it allows two different NFS clients
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-to get reasonable good results when both clients are actively
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-writing to common filesystem on the server.
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+significant performance penalty but it allows two different NFS clients
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+to get reasonable results when both clients are actively
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+writing to a common export on the server.
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+.TP 1.5i
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+.I sec=mode
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+Set the security flavor for this mount to "mode".
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+The default setting is \f3sec=sys\f1, which uses local
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+unix uids and gids to authenticate NFS operations (AUTH_SYS).
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+Other currently supported settings are:
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+\f3sec=krb5\f1, which uses Kerberos V5 instead of local unix uids
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+and gids to authenticate users;
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+\f3sec=krb5i\f1, which uses Kerberos V5 for user authentication
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+and performs integrity checking of NFS operations using secure
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+checksums to prevent data tampering; and
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+\f3sec=krb5p\f1, which uses Kerberos V5 for user authentication
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+and integrity checking, and encrypts NFS traffic to prevent
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+traffic sniffing (this is the most secure setting).
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+Note that there is a performance penalty when using integrity
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+or privacy.
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.TP 1.5i
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.I tcp
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Mount the NFS filesystem using the TCP protocol instead of the
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