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  1. #1
    5 Star Lounger
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    How a packet sniffer reveals local net traffic




    TOP STORY


    How a packet sniffer reveals local net traffic


    By Susan Bradley

    How often have you looked at an ostensibly idle PC's flashing drive-access light and wondered: "What's my computer doing?"

    Some of that activity is internal, but much of it also involves external devices and services. Here's how to get a peek at that otherwise hidden network chatter.

    The full text of this column is posted at http://windowssecrets.com/top-story/...l-net-traffic/ (opens in a new window/tab).

    Columnists typically cannot reply to comments here, but do incorporate the best tips into future columns.

  2. #2
    New Lounger
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    ..a super article..would love to see more like this..especially how to sleuth your ISP..i often accuse
    the ISP of 'slowing down traffic' at certain times of the afternoon but have no way of investigating if this
    right or wrong..

    donc

  3. #3
    Ken Kashmarek
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    I spotted one item in your article that deserves additional attention.

    Most home routers (maybe all) come with 192.168.1.1 as the router address. That is not good because it makes such devices easy to find. In the address 192.168.x.y, you should reconfigure your router to set 'x' to some number OTHER than '1'. Further, you should set 'y' to something other than '1' as well. Doing so may make your router a bit harder to deal with when it comes to being compromised.

    Of course, for your published article, the default values used will make little difference when it comes to the concepts.

  4. #4
    jwoods
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    Quote Originally Posted by Ken Kashmarek View Post
    Most home routers (maybe all) come with 192.168.1.1 as the router address. That is not good because it makes such devices easy to find. In the address 192.168.x.y, you should reconfigure your router to set 'x' to some number OTHER than '1'. Further, you should set 'y' to something other than '1' as well. Doing so may make your router a bit harder to deal with when it comes to being compromised.
    I disagree.

    The router gateway address, whether 192.168.1.1, or 10.0.0.1 (Comcast) is not publicly visible on the Internet...the IP address that is assigned by your ISP is.

    If a hacker gets past the public IP through an open or unfiltered port, they own your router...regardless of the gateway address.

    Two good quick security checks of your "visibility" (and vulnerability) to the outside world are GRC.com's ShieldsUP!! and Speedguide.net's SG Security Scan.

    https://www.grc.com/intro.htm

    http://www.speedguide.net/scan.php
    Last edited by jwoods; 2015-05-21 at 16:02.

  5. #5
    jwoods
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    Quote Originally Posted by crossd View Post
    i often accuse the ISP of 'slowing down traffic' at certain times of the afternoon but have no way of investigating if this
    right or wrong..donc
    Could be just "rush hour" traffic.

    Try Ookla's Speedtest at different times of the day...

    http://www.speedtest.net/

    You can also run their Pingtest to check the quality of your connection...

    http://www.pingtest.net/

    Note: This test requires Java for the packet loss check only. However it is NOT REQUIRED to complete the other tests, so you do not have to install it.
    Last edited by jwoods; 2015-05-21 at 16:31.

  6. #6
    Silver Lounger wavy's Avatar
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    Reducing the range of addresses can be a help if you don't have visitors logging in and all computers are always on.
    David

    Just because you don't know where you are going doesn't mean any road will get you there.

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