Hi:
I have been given the responsibility of administering AIX 3.1 machine in my lab recently. And, I am having trouble logging on to the machine using SSH through windous systems. Thus, now no one is able to access it!!
The following error message is displayed when I tried to login:
"The host is unreachable. The host may be down, or there may be a problem with the network connection. Sometimes, such problems may be caused by a misconfigured firewall."
The checked to see if ssh is running on the UNIX machine using "ps -A". And, I couldn't see "sshd" in the generated list. Then I tried to start it using "/usr/local/sbin/sshd start" and it gave me back "Extra argument started". Then I again checked for "sshd". And, the process(sshd) didnt start at all.
This is the /usr/local/etc/sshd_config :
#Port 22
#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_host
s
#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
# 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
#X11DisplayOffset 10
#X11UseLocalhost yes
#PrintMotd yes
#PrintLastLog yes
#KeepAlive yes
#UseLogin no
#UsePrivilegeSeparation yes
#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
UsePrivilegeSeparation yes
And, this is /usr/etc/ssh_config :
# Host *
# ForwardAgent yes
# ForwardX11 yes
# RhostsAuthentication yes
# RhostsRSAAuthentication yes
# RSAAuthentication 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,aes2
56-cbc
# EscapeChar ~
And, I dont know how to check if the port used by SSH(i.e.22 in my case) is behind the firewall or not.
I am new to unix and still in the process of learning. I hope the information I gave is sufficient for you and understand what the problem is? I dont have a clue whats going on!!
Please help me in fixing this problem.
Thanks in advance
pdepa