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Getting the Most Out of SSH

Posted by Soulskill on from the for-remote-controlling-your-nuclear-submarine dept.

jfruh writes "If you have to administer a *nix computer remotely, you hopefully ditched Telnet for SSH years ago. But you might not know that this tool does a lot more than offer you a secured command line. Here are some tips and tricks that'll help you do everything from detect man-in-the-middle attacks (how are you supposed to know if you should accept a new hosts public key, anyway?) to evading restrictions on Web surfing." What are your own favorite tricks for using SSH?

6 of 284 comments (clear)

  1. Hopefully? by Enry · · Score: 5, Insightful

    If you're still using telnet to administer anything that offers SSH, you should probably choose another field to work in.

    1. Re:Hopefully? by buchner.johannes · · Score: 4, Insightful

      Telnet has a protocol. Look at socat and netcat. Socat supports ssl, you can check your smtps server port.

      --
      NB: The message above might reflect my opinion right now, but not necessarily tomorrow or next year.
    2. Re:Hopefully? by hcs_$reboot · · Score: 4, Insightful

      So, when I want to check if the port 25 is not blocked (firewall at ISP...) and is opened, instead of a simple 'telnet host 25' followed by ^D or ^C, I should write a C++ (may I use C for that, please?) program that does the same thing? You do know that some people already wrote some commands for that, right?

      --
      Slashdot, fix the reply notifications... You won't get away with it...
  2. Re:SSH Tunnel by Ruzty · · Score: 4, Insightful

    Traffic pattern matching over SSL. A web session over an SSL connection looks very different than an ssh tunnel session over SSL, not to mention the length of life of the socket. It's trivial to have the firewall identify the ssh connection over port 443 and disconnect it in the first few seconds of the session based purely on the pattern of the traffic regardless of content.

    --
    The Master (Angelo Rossitto) in Mad Max Beyond Thunderdome, "Not shit, energy!"
  3. Re:InfoWorld at it again by Albanach · · Score: 4, Insightful

    Hell, I knew about these things when I was 16 and so did every other guy I knew who ever had used SSH.

    To be fair, I'm sure there are sixteen year olds reading /.

    I don't expect every article to be useful to me. Not sure why you would expect that.

    I haven't read the article - I think I'm familar enough myself with ssh - but as long as the info is accurate, I'd image it's a useful tutorial for folk getting into Linux.

  4. This Article's True Purpose by preaction · · Score: 5, Insightful

    Get real SSH tips from people complaining (rightly or not) that it doesn't contain any actual advice.