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trying to encrypt network traffic using SSH

Discussion in 'Networking' started by netgearboy, Jul 7, 2007.

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  1. netgearboy

    netgearboy Thread Starter

    Joined:
    Jun 21, 2007
    Messages:
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    hi,

    I have downloaded an SSH server called WinSSHD and an SSH client called Tunnelier. I'm attempting to have traffic encrypted on my home network.

    The way i am attempting this is with a client to server setup, which means that traffic from laptop one is encrypted by the client which is also on laptop one, then sent to the server to be decrypted, and the server then sends that traffic to its final destination which is laptop two. The question i have is this... isn't this pointless if i have the ssh server on the same computer as the ssh client? Because then the traffic is sent to the client, encrypted, sent to the server, decrypted... all while being on my local machine! It's then tramsmitted unencrypted to the second laptop. Is that what happens? If i'm right about this, then are there any web based SSH servers which can be used instead of a local one installed on my machine? And i know a solution might be to install the server on laptop two, but this isn't how i'd like to achieve this.

    Thanks for any repiles.
     
  2. denis bider

    denis bider

    Joined:
    Jul 9, 2007
    Messages:
    1
    Only the portion of the traffic between Tunnelier and WinSSHD is encrypted. If Tunnelier and WinSSHD are on the same machine, then no external traffic is encrypted. In order to encrypt the network traffic, you need to install the SSH server on the machine you are accessing.

    If you cannot do this, you need to install some crypto software on the destination machine, which crypto software needs to interoperate with the software installed on the source machine. I.e., if it's not SSH, then it needs to be something else, but whatever technology you choose, the crypto needs to be on both machines.

    Using an internet server won't help you for encrypting local network traffic, unless, again, you install some software on both machines that accesses the internet server securely and passes the data through it. Such a solution will also be considerably slower than a straight LAN connection.
     
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