1. Computer problem? Tech Support Guy is completely free -- paid for by advertisers and donations. Click here to join today! If you're new to Tech Support Guy, we highly recommend that you visit our Guide for New Members.

Network Traffic Question.

Discussion in 'General Security' started by ustacp, Oct 13, 2008.

Thread Status:
Not open for further replies.
  1. ustacp

    ustacp Thread Starter

    Joined:
    Aug 13, 2004
    Messages:
    292
    First off, I am not sure if this is where this post goes. This seems to be the best thread since my question sort of falls in the security side of things.

    OK, say I have a network setup at my house. Someone brings over a laptop and plugs it into my network. Would it be possible to tell what program they are running on their computer from one of my computers without accessing their computer? Say, the program requires HTTPS port to remain open and the program runs non-stop while the computer is plugged in. Is there a way to figure out what program they are running or what website they are connecting to is?
     
  2. Courtneyc

    Courtneyc

    Joined:
    Dec 6, 2003
    Messages:
    1,935
    Yes and no. If their computer has a firewall (and you don't have access to their computer), you cannot tell what programs they are running. That's one of the purposes of firewalls.

    However, once they leave their computer, you can detect this.

    One way is to put a sniffer on your network. That will tell you what traffic is passing by. Although there are plenty of free sniffers out there, very few will put your network card in promiscuous mode (the mode it needs to be in to see their traffic).

    Second, try checking your router. Many keep logs of all the connections they make.

    Third, install a proxy server. That way, all web traffic would have to hit the proxy in order to get out to the Internet. That way, you can see everything.

    Finally, you could install a DNS server on your network and point everyone to it using whatever DHCP server you use. All requests for web traffic would then be routed through your DNS server which would cache the responses. I use one to speed up web browsing (my ISPs DNS servers are not that great), but you could use it to check traffic through the cache if you wanted to.

    FYI: Most businesses use option 3.

    Courtney
     
  3. ustacp

    ustacp Thread Starter

    Joined:
    Aug 13, 2004
    Messages:
    292
    Oh OK. So if I had my network hooked into a proxy server, I would be able to tell what program someone was using on their computer?
     
As Seen On
As Seen On...

Welcome to Tech Support Guy!

Are you looking for the solution to your computer problem? Join our site today to ask your question. This site is completely free -- paid for by advertisers and donations.

If you're not already familiar with forums, watch our Welcome Guide to get started.

Join over 733,556 other people just like you!

Loading...
Similar Threads - Network Traffic Question
  1. smilesmile
    Replies:
    1
    Views:
    772
  2. hdham
    Replies:
    6
    Views:
    373
Thread Status:
Not open for further replies.

Short URL to this thread: https://techguy.org/758894

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice