Blocking certain p2p ports? Under the WRT55Ag router

Discussion in 'Networking Issues' started by dem0nk1d, Feb 14, 2005.

  1. dem0nk1d

    dem0nk1d Network Guru Member

    I thought i configed my router correctly to block out certain ports under ACCESS RESTRICTION TAB i nthe linksys router config. I put in all the mac address that are being used on the LAN. Then the blocking of ports. Ports are followed 1214-1214 UDP/TCP, 4661-4672 UDP/TCP, 6346-6346 UDP-TCP. This should be blocking ports correct? Well this is the situation, I am the LAN Admin in my house, and my room is basicly the cetral location of where everything goes out to. The lines from the router go into two other rooms, which my room-mates live in. One has a switch so he can run two boxs at the same time etc... The other only has one box. Both I have found out are using Kazza, and thus i belive is killing bandwith. I thought 1214 is kazza's port. What am i doing wrong if at all. I'd like to kill all p2p network sharing on my lan. The f#ckers need to know how to use FTP or something other than a p2p.

    I also have screen shots but this forum will not let me attach pictures..
  2. howardp6

    howardp6 Network Guru Member

    The users of Kazaa can change their default ports for Kazaa and get around you attempt to block the ports they use, Some P2Ps can dynamically change the ports. You can use QOS to try to throttle their throughput. Unless you have packet sniffing on your router you will find it hard to block P2P. School use packet sniffing and QOS to help maintain usable bandwith. There is softwae to block P2P, but it is entended for Schools or Businesses and is very expensive. Some ISPs use special router to block P2P. Unless you block thier access completely and tell them you are removing thier access to the internet and get them to not use P2P you are out of luck.
  3. ando

    ando Guest

    block P2P to speed up the internet

    Just as you are sharing a house and don't want flatmates overloading your connection., I have the same issues with my teenage kids. Actually, quite apart from the legal/copyright aspects of P2P sites like BitTorrent, there is the issue that the combined traffic from all of it slows down the global net for us all. True that there are technologies increasing speed into the net like ADSL2+ but one day, if we all continue to spread files everywhere (and break copyrights in process) then the whole internet will crash.
    Anyway, I'm still trying to work out what to block on my WAG54G ... maybe I'll give up and ask my ISP, Telstra Autralia, if they can block for me ... might be easier?
  4. Guyfromhe

    Guyfromhe Network Guru Member

    your ISP isn't likely to do anything about it... you could tell them to not use P2P software and if they do take away their internet access, I bet that would work better than any port blocking, hehe
  5. cromrell

    cromrell Network Guru Member

    monitor internet use with software

    I have been looking for some freeware/cheap software to try and montior internet usage by PC, so I can better manage bandwidth usage at my company, scold abusers, and possibly even block inappropriate content.

    I used a software/hardware solution (, however the product is pretty exp $7-$10k, plus $2k/ann support.

    I thought about trying to use WAP54GS parental controls (for blocking), but having a seperate internet login wasn't going to work, nor the scope (approx 20 internet users using win2000, winXP).

  6. Guyfromhe

    Guyfromhe Network Guru Member

    if you just want to monitor you can get pretty detailed machine logs from ntop running on a mirror port or connected between gateway and cable modem...
    it shows you stats for each machine what os the machine is running, peers it's connected to, and a metric ton of other useless data it also keeps track of bandwidth used based on client. it also give you real time reports on that stuff and shows you what services each machine is running, etc.
    it's really quite nifty plus it's free, all you need is an old computer to dump it on..
    i'm sure theres many more packages out there that will do similar things, you can also use the system to limit bandwidth to individual systems if you want as an added bonus to having to set it up...

    another thing you can do to discourage p2p is give them like 3 or 4k of upload that will usually stop them from screwing up your internet connection because they can't upload enough to hit the cap and no one will send quickly to them because their sending so slow...
  7. jagboy

    jagboy Network Guru Member

    a good solution for this would be to by a old server and install some kinda of linux @

    most of the linux they have are free!! and i am sure that they have somthing to suite your needs
  8. Guyfromhe

    Guyfromhe Network Guru Member

    or some kinda bsd wink wink nudge nudge
  9. jagboy

    jagboy Network Guru Member

    cant forget about the freebsd hehe
  10. Guyfromhe

    Guyfromhe Network Guru Member

    sure can't :p
    if we keep this up your gunna hit 500 in the next 15 mins :p
  11. jagboy

    jagboy Network Guru Member

    i am sure you will hit it soon just quit your day job. hehe
  12. Guyfromhe

    Guyfromhe Network Guru Member

    i'm not even a networked nut yet... and no, my dayjob is where I get the most posting done :)
  13. jagboy

    jagboy Network Guru Member

    if you do most of your posting fomr work then what do you do. i would like a job like that :D
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