OpenSSH 3.4p1 And XForwarding On Solaris 8

From: Kuderka, William J (William) ** CTR ** (wkuderka@avaya.com)
Date: Fri Jun 28 2002 - 12:12:47 EDT

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I recently compiled and installed OpenSSH 3.4p1 on a Solaris 8 server.
Although I set "X11Forwarding yes" in /usr/local/etc/sshd_config and
"ForwardX11 yes" in /usr/local/etc/ssh_config I am getting a "Can't open
display" error when I try to start an X application on a remote server from my
Windows based SSH client and Exceed. The client setup worked with OpenSSH
3.1p1 and SSH2 version 2.4. Any thoughts?

Additional information:

I used the following steps to compile and install OpenSSH 3.4p1 (using gcc
version 2.95.2)

#./configure --with-prngd-socket=/var/spool/prngd/pool
#make
#make install

I also installed the following packages from http://www.sunfreeware.com/ :

openssl-0.9.6c
prngd-0.9.23
zlib-1.1.4

I had been successfully using OpenSSH 3.1p1 (from the package openssh3.1p1
from the above mentioned site) including X forwarding, but was forced to
upgrade when the CERT advisory came out about OpenSSH.

I have included copies of my sshd_conifg and ssh_config files at the end of
this message.

Any help would be greatly appreciated.

Thanks,
Bill

William Kuderka
wkuderka@avaya.com

/usr/local/etc/sshd_config:

# $OpenBSD: sshd_config,v 1.56 2002/06/20 23:37:12 markus Exp $

# 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:/usr/local/bin

# 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
Protocol 2,1
#ListenAddress 0.0.0.0
#ListenAddress ::

# HostKey for protocol version 1
#HostKey /usr/local/etc/ssh_host_key
# HostKeys for protocol version 2
#HostKey /usr/local/etc/ssh_host_rsa_key
#HostKey /usr/local/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 600
#PermitRootLogin yes
#StrictModes yes

#RSAAuthentication yes
#PubkeyAuthentication yes
#AuthorizedKeysFile .ssh/authorized_keys

# 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
/usr/local/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
PasswordAuthentication yes
#PermitEmptyPasswords no

# Change to no to disable s/key passwords
#ChallengeResponseAuthentication yes

# Kerberos options
#KerberosAuthentication no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes

#AFSTokenPassing no

# Kerberos TGT Passing only works with the AFS kaserver
#KerberosTgtPassing no

# Set this to 'yes' to enable PAM keyboard-interactive authentication
# Warning: enabling this may bypass the setting of 'PasswordAuthentication'
#PAMAuthenticationViaKbdInt yes

#X11Forwarding no
X11Forwarding yes
#X11DisplayOffset 10
#X11UseLocalhost yes
X11UseLocalhost no
#PrintMotd yes
#PrintLastLog yes
#KeepAlive yes
#UseLogin no
#UsePrivilegeSeparation yes
UsePrivilegeSeparation no

#Compression yes

#MaxStartups 10
# no default banner path
#Banner /some/path
#VerifyReverseMapping no

# override default of no subsystems
Subsystem sftp /usr/local/libexec/sftp-server

/usr/local/etc/ssh_config:

# $OpenBSD: ssh_config,v 1.15 2002/06/20 20:03:34 stevesk Exp $

# This is the ssh client system-wide configuration file. See
# ssh_config(5) for more information. This file provides defaults for
# users, and the values can be changed in per-user configuration files
# or on the command line.

# Configuration data is parsed as follows:
# 1. command line options
# 2. user-specific file
# 3. system-wide file
# Any configuration value is only changed the first time it is set.
# Thus, host-specific definitions should be at the beginning of the
# configuration file, and defaults at the end.

# Site-wide defaults for various options

# Host *
# ForwardAgent no
ForwardAgent yes
# ForwardX11 no
ForwardX11 yes
# RhostsAuthentication no
# RhostsRSAAuthentication no
# RSAAuthentication yes
# PasswordAuthentication yes
PasswordAuthentication yes
# BatchMode no
# CheckHostIP yes
# StrictHostKeyChecking ask
# IdentityFile ~/.ssh/identity
# IdentityFile ~/.ssh/id_rsa
# IdentityFile ~/.ssh/id_dsa
# Port 22
# Protocol 2,1
# Cipher 3des
# Ciphers
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc
# EscapeChar ~
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