[pts/3][root@phobos-freebsd]:/tmp# klist -k
Keytab name: FILE:/etc/krb5.keytab
KVNO Principal
---- --------------------------------------------------------------------------
   3 host/phobos-freebsd.deimos.ca@DEIMOS.CA
   3 nfs/phobos-freebsd.deimos.ca@DEIMOS.CA
[pts/3][root@phobos-freebsd]:/tmp# cat /etc/exports
/ -alldirs -network 192.168.0.0 -mask 255.255.0.0 -maproot=root -sec=sys



(SNIP)


[pts/19][root@phobos]:/tmp/kerberos/krb5-1.13/doc/pdf# klist -k
Keytab name: FILE:/etc/krb5.keytab
KVNO Principal
---- --------------------------------------------------------------------------
  10 host/phobos.deimos.ca@DEIMOS.CA
  11 nfs/phobos.deimos.ca@DEIMOS.CA
[pts/19][root@phobos]:/tmp/kerberos/krb5-1.13/doc/pdf# mount -vvvv phobos-freebsd:/ /mnt/ -o sec=sys
mount: fstab path: "/etc/fstab"
mount: mtab path:  "/etc/mtab"
mount: lock path:  "/etc/mtab~"
mount: temp path:  "/etc/mtab.tmp"
mount: UID:        0
mount: eUID:       0
mount: no type was given - I'll assume nfs because of the colon
mount: spec:  "phobos-freebsd:/"
mount: node:  "/mnt/"
mount: types: "nfs"
mount: opts:  "sec=sys"
mount: external mount: argv[0] = "/sbin/mount.nfs"
mount: external mount: argv[1] = "phobos-freebsd:/"
mount: external mount: argv[2] = "/mnt/"
mount: external mount: argv[3] = "-v"
mount: external mount: argv[4] = "-o"
mount: external mount: argv[5] = "rw,sec=sys"
mount.nfs: timeout set for Thu Dec 11 00:46:10 2014
mount.nfs: trying text-based options 'sec=sys,vers=4,addr=192.168.2.211,clientaddr=192.168.2.2'
mount.nfs: mount(2): Permission denied
mount.nfs: access denied by server while mounting phobos-freebsd:/