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  • "The same machines WLAN IP" - are you saying that you have machines with both a LAN IP and another WLAN IP? If so, can you edit and explain a bit more about the setup?
    – Paul
    Commented Dec 21, 2012 at 22:44
  • Which operating system are you running? can you tellnet it on port 22? What is the ListenAddress in your sshd_config? Can you ping it? There're many aspects you must investigate.
    – user181993
    Commented Dec 22, 2012 at 0:39
  • I can't believe you haven't included the error message you are getting
    – barlop
    Commented Dec 22, 2012 at 0:41
  • @user181993: Everything is a mix of ArchLinux or Ubuntu or Debian. Every machine can ssh into localhost, and when connected via an ethernet cable I can ssh in from another machine.
    – wting
    Commented Dec 22, 2012 at 12:06
  • 1
    @WilliamTing The specific words of the error message are obviously relevant. Not for its meaning, but because there would be specific things that trigger the specific error message. BTW, it could be a firewall, so if you are brave/risky, you could turn the FW off and see if you still get the error.
    – barlop
    Commented Dec 22, 2012 at 15:46