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It's a dell ubuntu. But I don't know why I can't do:

myuser@192.168.0.103

which is my local-ip.

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Are you trying to connect from another linux box on the same LAN? –  mrucci Apr 17 '10 at 8:37
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I'm on a windows machine, on the same lAN. –  Alex Apr 17 '10 at 8:42

2 Answers 2

You should start with some basics.

  1. If 192.168 is your local LAN and you have a Ubuntu and another Windows machine wired to it, you first need to confirm if you can ping from one to the other
  2. Once you know the two machines can 'see' each other over the LAN,
    you can check if SSHd is active on the Ubuntu machine.
    • you can do a 'netstat -l' on the Ubuntu to look for 22/tcp being LISTEN'ed on
    • you can then do a 'telnet ubuntu_ip 22' from the Windows machine to check nothing is blocking that connectivity
      • if you get a 'connection refused' someone is blocking SSH
        (or, there is no SSHd listening in the first place)
  3. Also, while you try things, look at Ubuntu log files to check for related log lines
    • /var/log/messages
    • /var/log/auth.log
    • /var/log/secure
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Ok, need some more info from you first:

Can you ssh in from any other pc?

What software are you using on the win client? Putty?

Are you getting a connection refused or a time out error?

Openssh-server is not installed on most distros automaticly, did you install it on your "dell Ubuntu" box? Without it you can't get remote access. 'Sudo apt-get install ssh' should do the trick.

Can you ping the ip?

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Also the ssh service must be started. I think installing ssh trough apt-get also starts it but I'm not sure. –  Ivan Petrushev Apr 17 '10 at 16:52

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