X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fgssd%2Fgssd.man;h=d8138faf0e3f8ac4ce1f15c37c886bf2238bb060;hp=0a23cd6316745926d30d6237e399383564a10c5c;hb=adee9b7bddedcddb8de4e0b7c2f778148b1f4d2b;hpb=afa859b029d9cd15604ce7d5f88b5a205ea4c774

diff --git a/utils/gssd/gssd.man b/utils/gssd/gssd.man
index 0a23cd6..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