Posted on 2011-04-18
Last Modified: 2012-05-11
I am testing the network security, I have installed Wireshark...i want to know how to sniff other PCs' traffic using my pc?
Question by:mawingho
    LVL 95

    Accepted Solution

    You can't sniff a switch unless it's a managed switch that has the ability to send all traffic to a monitoring port as well (the proper term eludes me at the moment).  If it's not a managed switch, then you need a hub to sniff things.

    Switches direct traffic to specific ports and don't broadcast it to others.  Hubs, are essentially repeaters that should out everything they get to all the ports they have.  One is the correct one, the others aren't... but if a sniffer is on another, then you can sniff it.
    LVL 38

    Assisted Solution

    by:Aaron Tomosky can arp poison but that causes it's own set of problems. I just wanted to clarify that you can't sniff a switch is really there isn't a good way to sniff a switch.
    LVL 4

    Assisted Solution

    What leew is referring is called Port Mirroring that is you set up a port to mirror your uplink port (if you have one) and then you can sniff all the traffic using wireshark
    LVL 1

    Assisted Solution

    ettercap may help you out in this case:
    1. you may install ettercap ( on another PC;
    2. use ettercap to sniff your network (of course the ettercap PC and your PC must be in the same network);
    3. Then filter the result by using IP or mac address etc and see if any other PCs are trying to attack your PC.
    LVL 17

    Assisted Solution


    Which switch are you using?
    LVL 21

    Assisted Solution

    If you are looking for information regarding what goes to and from the Internet then the firewall/router's event log may help somewhat.

    To capture the actual packets you would need to use port mirroring as mentioned above.

    Featured Post

    Better Security Awareness With Threat Intelligence

    See how one of the leading financial services organizations uses Recorded Future as part of a holistic threat intelligence program to promote security awareness and proactively and efficiently identify threats.

    Join & Write a Comment

    Suggested Solutions

    Title # Comments Views Activity
    OWA and AppPool problem 20 86
    firefox and saved loggins 5 47
    Symantec enterprise client 5 22
    solarwind tftp server 2 18
    When the confidentiality and security of your data is a must, trust the highly encrypted cloud fax portfolio used by 12 million businesses worldwide, including nearly half of the Fortune 500.
    Password hashing is better than message digests or encryption, and you should be using it instead of message digests or encryption.  Find out why and how in this article, which supplements the original article on PHP Client Registration, Login, Logo…
    After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
    After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

    730 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    15 Experts available now in Live!

    Get 1:1 Help Now