Cable broadband...
Results 1 to 7 of 7

Thread: Cable broadband...

  1. #1
    Senior Member
    Join Date
    Mar 2004
    Posts
    139

    Cable broadband...


    People that have cable television often have their internet service piggyback on that cable.
    Somehow that strikes me as a bus-topology, and users have to share the available bandwidth
    with others on that segment. So, with that in mind, doesn't it stand to reason that installing a network analyzer on your box and placing your NIC in promiscuous mode, that it would be quite easy to monitor traffic of that cable segment. Are these inherent weaknesses of cable, and are there safeguards to protect users against such abuse?
    Just wondering...

    g8way2u

  2. #2
    AO Ancient: Team Leader
    Join Date
    Oct 2002
    Posts
    5,197
    My understanding is that the cable modem itself is the filter that doesn't allow traffic through to the internal computer unless it is for the specific IP address. I have never tested that theory though so I could be wrong..... I really don't care what my neighbors can do.....
    Don\'t SYN us.... We\'ll SYN you.....
    \"A nation that draws too broad a difference between its scholars and its warriors will have its thinking done by cowards, and its fighting done by fools.\" - Thucydides

  3. #3
    Senior Member kr5kernel's Avatar
    Join Date
    Mar 2004
    Posts
    347
    There was a story on securityfocus a while back:

    http://www.securityfocus.com/news/7977

    This articled spoke about guys uncapping the filters in cable modems and sniffin around...so much for sharing bandwidth when you can handle the routing....
    kr5kernel
    (kr5kernel at hotmail dot com)
    Linux: Making Penguins Cool Since 1994.

  4. #4
    Priapistic Monk KorpDeath's Avatar
    Join Date
    Dec 2001
    Posts
    2,628
    You can see all the traffic on your segment. The cable modem (misnomer) does not filter anything.
    But tell me what good it's going to do you? So you're eavesdroping on Joe Shmoley, next door.....who cares. There will be a bunch of web traffic and instant messaging traffic. Whoopee!!
    Mankind have a great aversion to intellectual labor; but even supposing knowledge to be easily attainable, more people would be content to be ignorant than would take even a little trouble to acquire it.
    - Samuel Johnson

  5. #5
    AO Ancient: Team Leader
    Join Date
    Oct 2002
    Posts
    5,197
    Korp: Gee.... thanks..... Now I have to determine if my neighbors can see my pr0n surfing.... Something else I really don't want to have to spend time doing.....
    Don\'t SYN us.... We\'ll SYN you.....
    \"A nation that draws too broad a difference between its scholars and its warriors will have its thinking done by cowards, and its fighting done by fools.\" - Thucydides

  6. #6
    Macht Nicht Aus moxnix's Avatar
    Join Date
    May 2002
    Location
    Huson Mt.
    Posts
    1,752
    Now it is probably a good deal that Tiger and me will never be on the same segment of cable. I can see it now -- "The Porn Wars ". He steals mine and I try to steal his.....
    \"Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, Champagne in one hand - strawberries in the other, body thoroughly used up, totally worn out and screaming WOO HOO - What a Ride!\"
    Author Unknown

  7. #7
    Senior Member
    Join Date
    Mar 2004
    Posts
    139

    Well, I think that I have to disagree with KorpDeath. It is quite possible to sniff passwords
    and even the occasional PIN # off neighbor traffic. Next, a little bit of dumpster diving; gotta sort through my neighbors trash and see what kinda goodies are ripe for the pickin'. Maybe
    some old bills, who knows. Sure the majority of the traffic will be plain old browsing, but it also depends on what type of neighborhood you live in. This is all highly illegal, off course, but there are folks out there that just don't care about that.
    Nevertheless, the idea...

    edit: OK, so maybe not...(just read the full article), but does anyone have some cheap old MAU's. Who knows, maybe a thinnet NIC might get some packets. Might be some use for all that old junk.LOL

    g8way2u

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

 Security News

     Patches

       Security Trends

         How-To

           Buying Guides