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Thread: Precautions before going online?

  1. #1
    Join Date
    Jan 2012
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    37

    Precautions before going online?

    I'm doing a clean alternate install and don't trust the network I am connecting to. Are there any security measures that can be taken before I connect to the internet?
    Would it be better to connect directly to the router with an ethernet while configuring everything?
    Last edited by jpdeaton; January 31st, 2012 at 05:12 AM.

  2. #2
    Join Date
    Jun 2011
    Location
    Atlanta Georgia
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    1,771
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Precautions before going online?

    If you don't trust the network you're on there really aren't any security measures you can take.

    That being said , choosing a switched connection to the router does give you a little bit. Though that traffic can still be sniffed by anyone on that router (via arp poisoning)

    You need to be using SSL/TLS for all sensitive online dealings. IE: Internet banking , email , social networking etc. You could use a VPN or ssh tunnel to further this if you have or can get access to one.

    Other than that standard rules apply. Noscript on our browser (as well as other similar addons) , decent firewall config, apparmor profiles enforced, well configured file permissions, strong passwords, etc.

    Hope this helps.

  3. #3
    Join Date
    Feb 2010
    Location
    Land of Confusion
    Beans
    8,297
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Precautions before going online?

    Enabling UFW will make you invisible to port scans, but your packets will still be sniffable. As mentioned above, HTTPS and other encrypted connections are the way to go when using an insecure network. If the router is yours, then yes, connect to it with hard wire and lock it down.
    Code:
    sudo ufw enable
    Thank you for your contributions. "So long and thanks for the fish!"

  4. #4
    Join Date
    Jan 2012
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    37

    Re: Precautions before going online?

    How can I delete the firefox disable file for apparmor? It's not letting me delete it.
    Anyone know whats up with the 140TB? lol...


    Last edited by jpdeaton; January 31st, 2012 at 07:04 AM.

  5. #5
    Join Date
    Feb 2010
    Location
    Land of Confusion
    Beans
    8,297
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Precautions before going online?

    You have to open Nautilus as the root user. This is not recommended. You can set the profile to complain, if needed.

    To open Nautilus as root, copy and paste the folling in a terminal,
    Code:
    gksudo nautilus
    then enter your password. Be careful as it is easy to destroy your install by altering the wrong directory.
    Thank you for your contributions. "So long and thanks for the fish!"

  6. #6
    Join Date
    Jan 2012
    Beans
    37

    Re: Precautions before going online?

    Is it normal for /usr/share to be a large file? How can I disable any shared files/folders?

    thanks again

  7. #7
    Join Date
    Nov 2009
    Beans
    919
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Precautions before going online?

    Quote Originally Posted by jpdeaton View Post
    Is it normal for /usr/share to be a large file? How can I disable any shared files/folders?

    thanks again
    /usr/share shouldn't be messed with. It's got application libraries in it, so it's not a folder that contains your files shared out over a network, but rather it contains necessary software and libraries that need to be accessed, or shared, by all users of the local computer. If you're the only user then that's just you anyway. Don't remove anything from it as it will break things.

    The folder size does not seem to be reporting accurately. I doubt very much that there's that much space on the drive to begin with.

  8. #8
    Join Date
    Jan 2012
    Beans
    37

    Re: Precautions before going online?

    I ended up doing a command line minimal install. While gdm was installing I noticed a line that said "setting up user nopwd"

    Normal or no?

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