X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fgssd%2Fgssd.man;h=d8138faf0e3f8ac4ce1f15c37c886bf2238bb060;hp=8fa4f4afb1b23b569c60ea038807f482d7d2eb04;hb=adee9b7bddedcddb8de4e0b7c2f778148b1f4d2b;hpb=25cd5f9101b8969f9e1f9d7d486f11c215d0eeb4

diff --git a/utils/gssd/gssd.man b/utils/gssd/gssd.man
index 8fa4f4a..d8138fa 100644
--- a/utils/gssd/gssd.man
+++ b/utils/gssd/gssd.man
@@ -6,7 +6,7 @@
 .SH NAME
 rpc.gssd \- rpcsec_gss daemon
 .SH SYNOPSIS
-.B "rpc.gssd [-f] [-n] [-k keytab] [-p pipefsdir] [-v] [-r] [-d ccachedir]"
+.B "rpc.gssd [-f] [-n] [-k keytab] [-l] [-p pipefsdir] [-v] [-r] [-d ccachedir]"
 .SH DESCRIPTION
 The rpcsec_gss protocol gives a means of using the gss-api generic security
 api to provide security for protocols using rpc (in particular, nfs).  Before
@@ -52,6 +52,8 @@ used only "nfs/*" keys found within the keytab.
 To be more consistent with other implementations, we now look for
 specific keytab entries.  The search order for keytabs to be used
 for "machine credentials" is now:
+.br
+  <HOSTNAME>$@<REALM>
 .br
   root/<hostname>@<REALM>
 .br
@@ -64,6 +66,33 @@ for "machine credentials" is now:
   nfs/<anyname>@<REALM>
 .br
   host/<anyname>@<REALM>
+.IP
+If this search order does not use the correct key then provide a
+keytab file that contains only correct keys.
+.TP
+.B -l
+Tells
+.B rpc.gssd
+to limit session keys to Single DES even if the kernel supports stronger
+encryption types. Service ticket encryption is still governed by what
+the KDC believes the target server supports. This way the client can
+access a server that has strong keys in its keytab for ticket decryption
+but whose kernel only supports Single DES.
+.IP
+The alternative is to put only Single DES keys in the server's keytab
+and limit encryption types for its principal to Single DES on the KDC
+which will cause service tickets for this server to be encrypted using
+only Single DES and (as a side-effect) contain only Single DES session
+keys.
+.IP
+This legacy behaviour is only required for older servers
+(pre nfs-utils-1.2.4). If the server has a recent kernel, Kerberos
+implementation and nfs-utils it will work just fine with stronger
+encryption.
+.IP
+.B Note:
+This option is only available with Kerberos libraries that 
+support setable encryption types.
 .TP
 .B -p path
 Tells
@@ -86,6 +115,21 @@ Increases the verbosity of the output (can be specified multiple times).
 .B -r
 If the rpcsec_gss library supports setting debug level,
 increases the verbosity of the output (can be specified multiple times).
+.TP
+.B -R realm
+Kerberos tickets from this
+.I realm
+will be preferred when scanning available credentials cache files to be
+used to create a context.  By default, the default realm, as configured
+in the Kerberos configuration file, is preferred.
+.TP
+.B -t timeout
+Timeout, in seconds, for kernel gss contexts. This option allows you to force 
+new kernel contexts to be negotiated after
+.I timeout
+seconds, which allows changing Kerberos tickets and identities frequently.
+The default is no explicit timeout, which means the kernel context will live
+the lifetime of the Kerberos service ticket used in its creation.
 .SH SEE ALSO
 .BR rpc.svcgssd(8)
 .SH AUTHORS