title: Disabling ssh password authentication
body: <p>I am trying to disable password authentication with ssh, but it doesn't seem to be working.  I have followed every set of directions I can find to fix this, and they're all basically the same.  I have modified the /etc/ssh/ssh_config files as follows:</p>
  
  <pre><code># 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 some commonly used options.  For a comprehensive
  # list of available options, their meanings and defaults, please see the
  # ssh_config(5) man page.
  
  Host *
  #   ForwardAgent no
  #   ForwardX11 no
  #   ForwardX11Trusted yes
  #   RhostsRSAAuthentication no
  #   RSAAuthentication yes
  #   PubKeyAuthentication yes
  #   PasswordAuthentication no
  #   HostbasedAuthentication no
  #   GSSAPIAuthentication no
  #   GSSAPIDelegateCredentials no
  #   GSSAPIKeyExchange no
  #   GSSAPITrustDNS no
  #   BatchMode no
  #   CheckHostIP yes
  #   AddressFamily any
  #   ConnectTimeout 0
  #   StrictHostKeyChecking ask
  #   IdentityFile ~/.ssh/identity
  #   IdentityFile ~/.ssh/id_rsa
  #   IdentityFile ~/.ssh/id_dsa
  #   Port 22
  #   Protocol 2,1
  #   Cipher 3des
  #   Ciphers aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc
  #   MACs hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160
  #   EscapeChar ~
  #   Tunnel no
  #   TunnelDevice any:any
  #   PermitLocalCommand no
  #   VisualHostKey no
  #   ProxyCommand ssh -q -W %h:%p gateway.example.com
  #    SendEnv LANG LC_*
  #    HashKnownHosts yes
  #    GSSAPIAuthentication yes
  #    HashKnownHosts yes
  #    GSSAPIAuthentication yes
  #    GSSAPIDelegateCredentials no
      RSAAuthentication yes
      PubKeyAuthentication yes
      ChallengeResponseAuthentication no
      PasswordAuthentication no
      UsePAM no
  </code></pre>
  
  <p>I have then tried restarting the service, rebooting the computer, and everything else that I can think of and yet I can still log into this computer with my password, from multiple other computers.  Here's a dump of the ssh connection:</p>
  
  <pre><code>$ ssh -v matthew@server
  OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011
  debug1: Authentications that can continue: publickey,password
  debug1: Next authentication method: publickey
  debug1: Offering RSA public key: /Users/matthew/.ssh/private_key
  debug1: Authentications that can continue: publickey,password
  debug1: Next authentication method: password
  matthew@server's password: 
  debug1: Authentications that can continue: publickey,password
  Permission denied, please try again.
  matthew@server's password: 
  </code></pre>
  
  <p>The public key connection failed because I renamed my private key, intentionally to make sure it forces password authentication and theoretically fails.  At any rate, it does not and I can not for the life of me figure out what I'm doing wrong.</p>
  
  <p>Any suggestions?</p>