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What can i do?

Discussion in 'HyperWRT Firmware' started by diytactical, Nov 20, 2005.

  1. diytactical

    diytactical Network Guru Member


    I guess i will preface this by explaining my setup and situation.

    I am currently working in Iraq (Civilian Company) and we are using a DirecPC and it serves about 20 people, (not all at the same time obviously).

    To the DirecPC box we replaced a linksys B Router (I forget which model) with a WRT54G v 3.1. Imediately we noticed a drop in signal strength The B router was working great except for the crashes and lower bit rate, We took the after market addon antennas from the B and put them on the WRT54G to see if that would help (I assume they are compatable) but no real noticable change. So i started doing research read that there ars some issues with the factory power settings going to the antenna and came acroos this site. I replaced the factory firmware with HyperWRT Tofu 9 today and set the signal to 100%. We are still having signal problems. I tinkered a bit and set one antenna to tx and the other to rx and noticed a little bit of an increase still not to where it was with the B.

    I am trying to read up as much as i can but figured a direct question might get better results.

    All of the defaults are as they were when i upgraded the firmware only changes i made were to turn WEP back on and to increase the power and the changes to the antenna settings mentioned above. Are there any other settings i should be looking at that will get this going? We do have obstruction in the way etc but that was not an issue with the old router.

    on a somewhat unrelated note is there a way to disable Limewire traffic? I tried to block the default ports (on the old router, haven't set anything up on the WRT54G yet) but the people using it have it setup to use dynamic ports. I usually block their mac for 24 hours when i catch them but some people just don't get it. it becomes a real pain for me to keep an eye on them I would rather just block hte appication somehow.

    Any help will be greatly appreciated.

    I should also add that i am not an IT guy but have kind of taken this role. We are also exploting the possibility of doing something with the antennas but as you can imagine we have limited support or materials to work with.


  2. Toxic

    Toxic Administrator Staff Member

    Firstly welcome to the site.

    I hope you have read the FAQ i put up about poor signal strength here: http://www.linksysinfo.org/modules.php?name=Forums&file=viewtopic&t=4413

    P2P software is a pain if you dont want it. I would suggest trying to set low priorities in QoS to anyone you suspect of using it. Alchemy, DDWRT have better QoS funcation and may help your requirements as you can assign IP, Mac, or Services to Premium, Express, Standard or Bulk Priorities to lower the burden and try to slow down P2P sahring utilities. if you know an individual who is using it then block his access for a Week. he may then stop it
  3. jonnied

    jonnied Guest

    Don't have the soltution but good luck and thanks for the job your'e doing there!!!!!!!!!!!!!!!
  4. raistphrk

    raistphrk Network Guru Member


    If your budget will allow it, you might want to look at picking up two Hawking HSB2 range extenders. Basically, you'd hook one of these up to each antenna port. Each device plugs into a power source, and increases the power output to close to 500mW. Given that increase in power output, you should be able to take advantage of WPA encryption for your wireless clients without a performance decrease. I did a quick check on Amazon.com, and they list the units at 79.99 each. I know Amazon will ship to Kuwait, though if you want to get it anytime soon, shipping will be about $50 on top of that.


    As far as blocking Gnutella (Limewire), iptables has a module called rope that allows you to implement packet inspection and pattern matching, but I don't know if HyperWRT supports wrote. That being said, you could try adding the following to your iptables firewall script:

    iptables -A FORWARD -p tcp --dport 6346:6347 -j DROP
    iptables -A FORWARD -p udp --dport 6346:6347 -j DROP
    If rope gets compiled into the firmware, I can provide a number of rope scripts for blocking p2p services. They'd either have to be compiled into the firmware, or set up through startup scripts.

    I hope that helps. If you have any other questions, please don't hesitate to ask.
  5. diytactical

    diytactical Network Guru Member

    Thanks all for the response, sorry for the delay but i just got a day off so i am trying to catch up.

    Toxic, I did not catch the FAQ i will read through it in a bit.

    raistphrk, I will also look into the antennas. I can always have them sent to my wife and she can send them to me through the normal Mil Postal system.

    jonnied, thanks for the kind words. I'll further that by thanking the ones that are here because they have to be. I am here by choice. While i will probably spend more time here than most of them do, they desreve the majority of the praise. I used to wear their boots and know what it is like. Hopefully the project i am involved in (getting rid of the captured enemy ammunition) will help save some of their lives.

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