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ADMINISTRATION

Secure Tunnelling with SSH
By: icarus, (c) Melonfire
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  • Rating: 5 stars5 stars5 stars5 stars5 stars / 27
    2003-04-02

    Table of Contents:
  • Secure Tunnelling with SSH
  • Kicking The Tyres
  • Test Drive
  • Et Tu, Brute?
  • No Forwarding Address
  • Any Port In A Storm
  • Remote Control
  • In And Out
  • Log Out

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    Secure Tunnelling with SSH - Log Out
    (Page 9 of 9 )

    And that's about it for the moment. In this article, I introduced you to OpenSSH, a free open-source implementation of the SSH protocol. After a quick crash course in installing and configuring SSH, I took you through the process of creating a key pair, and using it to securely connect to other hosts. With the basics out of the way, I then moved to the main focus of this article - using SSH to create secure tunnels between ports on different hosts, in an effort to add greater security to the data packets traveling across a network. I walked you through a number of possible scenarios for this capability, including securing your connection to your incoming mail server via local port forwarding, and creating secure channels for hosts outside your firewall to communicate with hosts inside it via remote port forwarding.

    In case you'd like to read more about the capabilities and technologies discussed in this article, you should take a look at the following Web sites:

    The official OpenSSH Web site, at http://www.openssh.org/

    The OpenSSH FAQ, at http://www.openssh.org/faq.html

    The OpenSSH mailing list, at http://www.openssh.org/list.html

    Getting Started With SSH, at http://kimmo.suominen.com/ssh/

    SSH tutorials for Linux, at http://www.suso.org/linux/tutorials/ssh.phtml and http://www.linux.ie/articles/tutorials/ssh.php

    I hope you enjoyed this article, and that you found the information in it useful in securing your network. Till next time...stay healthy!

    Note: Examples are illustrative only, and are not meant for a production environment. Melonfire provides no warranties or support for the source code described in this article. YMMV!
    DISCLAIMER: The content provided in this article is not warranted or guaranteed by Developer Shed, Inc. The content provided is intended for entertainment and/or educational purposes in order to introduce to the reader key ideas, concepts, and/or product reviews. As such it is incumbent upon the reader to employ real-world tactics for security and implementation of best practices. We are not liable for any negative consequences that may result from implementing any information covered in our articles or tutorials. If this is a hardware review, it is not recommended to open and/or modify your hardware.

     

       

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