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Thread: High Network Activity

  1. #1
    Join Date
    Nov 2007
    Location
    UK
    Beans
    199
    Distro
    Xubuntu 16.04 Xenial Xerus

    High Network Activity

    Hi,

    System Monitor is showing my system downloading between 700KiB and 1.3MiB constantly and I'm not downloading anything. I disconnected and then reconnected and within 5 minutes it was showing that 3.9GB had been recieved.

    Is this normal or should I be worried?


    Flux

  2. #2
    Join Date
    Nov 2013
    Location
    On the edge
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    861
    Distro
    Ubuntu

    Re: High Network Activity

    Entirely depends on what the traffic is. Use
    Code:
    netstat -napt
    to see what IP addresses you're communicating with and over what ports. If you're familiar with wireshark or tcpdump, capture the packets and see what's getting transmitted.
    Knock knock.
    Race condition.
    Who's there?

  3. #3
    Join Date
    Feb 2007
    Location
    West Hills CA
    Beans
    10,048
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: High Network Activity

    Install etherape and see where the packets are coming from. If it is from a country that you have no desire to visit, then you might install some IP blocking.
    -------------------------------------
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  4. #4
    Join Date
    Jan 2014
    Beans
    Hidden!
    Distro
    Ubuntu Mate

    Re: High Network Activity

    Usually, when I see unexpected activity on my computer, i'ts downloading a podcast or torrent in the background that I've forgotten about. Sometimes, I also mute my volume when streaming and forgot too. The tools above work well in identifing connectons. Another super-easy one is Nethogs. It's a cli tool that will just give the user/application that's consuming bandwidth on an interface.

  5. #5
    Join Date
    May 2010
    Location
    uk
    Beans
    9,324
    Distro
    Xubuntu 14.04 Trusty Tahr

    Re: High Network Activity

    Hi

    For another couple of suggestions, i use nethogs and iftop to check when i have high traffic.

    Code:
    sudo apt-get install nethogs
    Code:
    sudo apt-get install iftop
    They may or may not be useful for you.

    Kind regards
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  6. #6
    Join Date
    Nov 2010
    Location
    India
    Beans
    Hidden!

    Re: High Network Activity

    Hi Matt

    install nethogs as suggested by matt. Its very good tool , I have used it. It will display the data transmission from every connection your PC had.

    just launch it as

    sudo nethogs <your_device>
    ex:
    sudo nethogs eth0
    Dont miss anything even it is small. one small pin is enough to bring down a man.


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