trouble with xfree

[<proven_r at teleadmin dot com>]

hi

i am a newbies with cygwin and need some help.
i have install with sucess cygwin and xfree and sshd on 2 computers and i
try lunch by ssh a distant process on xfree as explain in Cygwin/XFree86
User's Guide.

i do (inside xterm in xfree of coursse) the

ssh -X -l administrateur 192.168.0.19
it's works but i get the msg :
Warning: No xauth data; using fake authentication data for X11 forwarding.

then i try lunch a "distant" cession of xterm:

/usr/X11R6/bin/xterm&
and i get the error msg : X11 connection rejected because of wrong
authentication.
X11 connection to localhost:10.0 broken (explicit kill or server shutdown).

for information i have try uncomment the lines about X11 forwarding
(sshd_config) on the cygwin sshd server on the distant host to. I have try
with the line disabled or enabled for getting the same result.


my sshd_config :

# This is the sshd server system-wide configuration file. See
# sshd_config(5) for more information.
# This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin
# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented. Uncommented options change a
# default value.
Port 22
#Protocol 2,1
#ListenAddress 0.0.0.0
#ListenAddress ::
# HostKey for protocol version 1
#HostKey /etc/ssh_host_key
# HostKeys for protocol version 2
#HostKey /etc/ssh_host_rsa_key
#HostKey /etc/ssh_host_dsa_key
# Lifetime and size of ephemeral version 1 server key
#KeyRegenerationInterval 3600
#ServerKeyBits 768
# Logging
#obsoletes QuietMode and FascistLogging
#SyslogFacility AUTH
#LogLevel INFO
# Authentication:
#LoginGraceTime 120
#PermitRootLogin yes
# The following setting overrides permission checks on host key files
# and directories. For security reasons set this to "yes" when running
# NT/W2K, NTFS and CYGWIN=ntsec.
StrictModes no
#RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile /etc/authorized_keys                (i preffer use the
pub key authentication but i don't think it can be the trouble)
# rhosts authentication should not be used
#RhostsAuthentication no
# Don't read the user's ~/.rhosts and ~/.shosts files
#IgnoreRhosts yes
# For this to work you will also need host keys in /etc/ssh_known_hosts
#RhostsRSAAuthentication no
# similar for protocol version 2
#HostbasedAuthentication no
# Change to yes if you don't trust ~/.ssh/known_hosts for
# RhostsRSAAuthentication and HostbasedAuthentication
#IgnoreUserKnownHosts no
# To disable tunneled clear text passwords, change to no here!
#PasswordAuthentication yes
#PermitEmptyPasswords no
# Change to no to disable s/key passwords
#ChallengeResponseAuthentication yes
X11Forwarding yes                (here i have try yes or no)   (try disable
or enable this line)
X11DisplayOffset 10                (try disable or enable this line)
X11UseLocalhost yes               (try disable or enable this line)
PrintMotd yes                            (try disable or enable this line)
PrintLastLog yes                    (try disable or enable this line)
KeepAlive yes                        (try disable or enable this line)
UseLogin no                           (here i have try yes or no)  (try
disable or enable this line)
UsePrivilegeSeparation yes          (here i have try yes or no)   (try
disable or enable this line)
PermitUserEnvironment yes      (here i have try yes or no)    (try disable
or enable this line)
Compression yes
#MaxStartups 10
# no default banner path
#Banner /some/path
#VerifyReverseMapping no
# override default of no subsystems
Subsystem sftp /usr/sbin/sftp-server


Please if you see where is the trouble , explain it to a poor newbies as me.

thanks a lot

friendly

Provencal romain
10 rue du docteur roux
75015
0147342757
0609846053