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IP address

Posted on 2004-10-30
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Last Modified: 2010-05-18
Is there a way that I can monitor the connections/IP addresses of the people I am chatting with on clients like MSN and Yahoo Messenger, without using any additional software?I mean like using DOS or any other inbuilt Windows Application. I am using Windows XP Professional. If no, then what software can I use to see all IP addresses that are sending data to my comp or the data passing through a certain port. Thank you.
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Question by:obajaber
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    by:NetworkArchitek
    Hi obajaber,
    hm is this for nefarious reasons? hm ... ok well Yes, just use netstat -n.

    Cheers!
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    by:
    My understanding is what NetworkArchitek would perfectly work whenever you transfer files between the chatting person using MSN or yahoo messenger.. Try to send a huge file and once they accept it , give the above command in the command prompt and see you can get the IP address. I have not tried that as I use a simple, free network monitoring software that would clearly say the same..
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    Author Comment

    by:obajaber
    Haha...Nope, am an IT student and I am just curious. The ethical hacker program in my college costs a fortune, and I cant affprd it, so I thought I can try to learn on my own. I am not interested in getting into trouble with authorities anyway :) Any idea about free resources that can teach from basics?
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    Author Comment

    by:obajaber
    the netstat -n does not show which application is using the ip address, so I still don't know what is the IP of my chat mate :s any help on that?
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    by:sunray_2003
    I donot think checking the IP address of the person you are chatting with is considered any hacking aslong as you donot get the IP and screw that machine.LOL !!

    FInding IP is kind of fun cos you can just say to that person where he is chatting from .. Kind of cool..

    I use port scanner programs to see what all ports my machine is connected to internet..
    Just search in google ..
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    Author Comment

    by:obajaber
    i know that you gotta do something with the IP to be considered hacking,, but you gotta start somewhere,right?;) and knowing the IP is the first step, isn't it? :D at least that is what I can tell from my classes so far
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    by:sanjoybasu
    obajaber,

    Answere to your question the netstat -n does not show which application is using the ip address
    Well if you carefully examine the netstat (windows.) under Foreign Address you see the IP address in the format IP Address:Port. TCP Port of application
    example
    Proto  Local Address                Foreign Address             State
    TCP    10.0.0.2:1150                10.0.0.56:80    ESTABLISHED
    Here 10.0.0.2 is connected to web server 10.0.0.56.
    I kind of disagree netstat can give you the IP address of your chat mate on AOL, Yahoo or MSN  because they are not peer to peer but client server.
    As far you passion for hacking goes you have to be very good in C programming very clear understanding of OS  preferably UNIX , TCP/IP, networking and have clear idea what is your intention it can also be used for predicting the security vulnerabilities and taking necessary precaution.
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    by:NetworkArchitek
    huh? Well, I realize netstat does not show "SoAndSoIP is connected to you using SuchandSuch.exe" but it gives you the port number which should be more than enough information.

    MSN messaging uses port 1863
    MSN file transfers use 6891-6900

    That should be what you need.
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    Expert Comment

    by:sanjoybasu

    MSN messaging uses port 1863 -Correct but the associated IP(SoAndSoIP) is not that of people you are chatting with it is most likely chat server at MSN (may be some natted ip of proxy at MSN)
    Also if you think netstat does not show "SoAndSoIP is connected to you using SuchandSuch.exe think again because netstat on different platform gives bit different output. Try netstat -ap | grep SuchandSuch  over linux (with su privilage) you will see "SoAndSoIP is connected to you using SuchandSuch" .
    Well usually you wont find any ".exe " on any UNIX flavor after all Unix is way smarter than any Window brothers (98, 2000, XP and God knows what) LOL:)  















    0you will see
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    by:NetworkArchitek
    Oh yes, the netstat found on nix systems is much more robust. I just assumed this was a windows box with the reference to "DOS." As far as what "who" is actually connecting ... Well, I don't know, I'm too busy to worry about how MSN Messenger works other than to know how to block the ports it uses =)
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    by:NetworkArchitek
    Well, just to keep going on that post. Whoever suggested that one must establish some sort of file-transfer session, voice chat, or web-cam session was correct. I think I posted the port for file transfer but I don't know the other ports MSN uses for Voice, I assume its UDP. But doing that coupled with using netstat and understanding how it works will give the information the questioner asked for.
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    by:cwkhang
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    by:sunray_2003
    NetworkArchitek,

    Looks like i was the one who told about file transfer. Once upon a time , I saw a similar question about this very same topic and saw the advise to do file transfer to get the IP. I have done once and using netstat , I was successful.
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