ssh with "RhostsRSAAuthentication yes" not working
I have recently upgraded all the machines in my dept from P4's running Fedora4-9 to Core2's running Centos 5.3.
I am using the same sshd_config as before for my network. Using NIS to login, we used to be able to ssh from machine to machine without having to enter a password. I believe the line in the config for this was: # For this to work you will also need host keys in /etc/ssh/ssh_known_hosts RhostsRSAAuthentication yes I have updated all the dsa,rsa keys in the /etc/ssh/ssh_known_hosts file and still cannot get passwordless logins to work. I know there are ways of doing this via the ~/.ssh/authorized_keys file, but this would be too cumbersome for such a large amount of users. Any ideas what I may have done wrong? Here is my sshd_config: # $OpenBSD: sshd_config,v 1.72 2005/07/25 11:59:40 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/local/bin:/bin:/usr/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 #ListenAddress 0.0.0.0 #ListenAddress :: # HostKey for protocol version 1 HostKey /etc/ssh/ssh_host_key # HostKeys for protocol version 2 HostKey /etc/ssh/ssh_host_rsa_key HostKey /etc/ssh/ssh_host_dsa_key # Lifetime and size of ephemeral version 1 server key KeyRegenerationInterval 3600 ServerKeyBits 768 # Logging # obsoletes QuietMode and FascistLogging #SyslogFacility AUTH SyslogFacility AUTHPRIV LogLevel INFO # Authentication: LoginGraceTime 120 PermitRootLogin yes StrictModes yes RSAAuthentication no PubkeyAuthentication yes AuthorizedKeysFile .ssh/authorized_keys # Don't read the user's ~/.rhosts and ~/.shosts files IgnoreRhosts no # For this to work you will also need host keys in /etc/ssh/ssh_known_hosts RhostsRSAAuthentication yes # similar for protocol version 2 HostbasedAuthentication yes # 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 no # 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 no #X11Forwarding no X11Forwarding yes #X11DisplayOffset 10 #X11UseLocalhost yes PrintMotd yes PrintLastLog yes KeepAlive yes #UseLogin no UsePrivilegeSeparation yes PermitUserEnvironment yes Compression yes #MaxStartups 10 # no default banner path #Banner /etc/ssh/banner #VerifyReverseMapping no # override default of no subsystems Subsystem sftp /usr/libexec/openssh/sftp-server # Allow and Deny settings DenyUsers deniedusers DenyGroups deniedssh UseDNS no |
What messages are you getting when you try to ssh from server to server?
One thing I find helpful when troubleshooting ssh is the following In a window on the target server sshd -D -d -d -d -p 999 ## this will start an ssh process listening on port 999 (or any port no in use), but will not put it into daemon mode on the client server ssh -v -p 999 <target server> This will give you debug info stating what types of authentication it's trying and what's failing etc. |
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