Possible to connect to larger (school) WiFi networks from 1-3 blocks away?

Jawadali

Senior member
Oct 1, 2003
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Hi everybody, here is the situation (thanks in advance for your patience):

My school has 3 wireless networks, two are WEP and one is WPA2 using PEAP encryption with a certificate. I think they want to eventually move everything to the WPA2 network since it apparently supports Wireless-N and has more range, but I doubt they'll take away both of the old WEP networks for a while since they are having issues with the rollout.

After configuring the PEAP certificate in windows, I typically enter my ID and password and am then able to access the internet. For the WEP networks, we have to register the MAC address of the device we plan to use (instantaneous online) as well as enter the WEP key, and then we can regularly access the network.

However, I cannot see any of these networks from my new room from my laptop , even though I'm only about a block away from the dorms (which do get the wireless signal). The campus itself is about 3-4 blocks away. I don't know the EXACT location of the closest Access Point, and I don't have a clear line-of-sight since there are buildings in the way.

I just purchased an ASUS WL-520GU wireless router that Supports alternate firmware such as DD-WRT and Tomato.

It looks like DD-WRT (and Tomato) have a few different modes (client bridge, repeater bridge, etc.).

How would I configure this router such that I can use it to access these networks?

I want to be able to "see" (any of) the school network(s), and be able to have my laptop connect wirelessly to them and if possible, have my desktop connect to one of the Ethernet ports in the router and be able to access the network as well. I don't mind if other students connect to the school network via my router, but I'd like to avoid it if possible in order to prevent over-burdening the router.

I figure I'd have to use some type of directional antenna or "cantenna". From doing some research, it looks like the antenna uses an RP-SMA connector.

I have never used DD-WRT or Tomato or built a DIY antenna before, but I'm willing to try it out.

I was following this antenna guide, but I'm open to suggestions.

Thanks!


 

JackMDS

Elite Member
Super Moderator
Oct 25, 1999
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Jawadali

Senior member
Oct 1, 2003
995
7
81
Hi Jack,

Thanks for the help.

I'll have to ask and find out where the nearest/best AP is, such that I can point the antenna in the right direction (there are a number of university-owned buildings and residence halls one block away).

I may try to DIY an antenna first (or purchase locally), and If I get somewhere, I may invest in a better antenna online (since its usually more difficult to return stuff online).
 

kevnich2

Platinum Member
Apr 10, 2004
2,465
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Originally posted by: vailr
Might look at a Buffalo USB antenna. One online report that I read mentioned getting good results using an older version, that looked like a car antenna.
http://www.everythingusb.com/b...2.0_adapter_12410.html

That wont' work if he's trying to connect up multiple PC's to one piece of equipment. If he wants an adapter for all PC's, yes that would work ok. I'd suggest a WHR-HP-G54, see if it picks up the signal. If it doesn't, add on a powerful directional antenna to it and point it near the school and see what the signal is like then. Once aimed, don't move it and you can use it as a bridge.
 

Modelworks

Lifer
Feb 22, 2007
16,240
7
76
The problem is going to be lack of line of sight. Wifi just doesn't go far without it. If you can find someone who can receive a strong signal you may want to ask them to place a bridge + cantenna or other directional antenna on their end and then use another cantenna on your end. You really need the signal to be directed towards where you are as much as possible. The current setup for them is probably to cover an area radiating in all directions from their AP , which is less than ideal for picking up the signal far away.
 

Jawadali

Senior member
Oct 1, 2003
995
7
81
Thanks for all of the replies, guys.

Assuming I can see the network:

Just for clarification, the Wireless Bridge config JackMDS posted would only enable me to connect my Laptop and Desktop to the ASUS WL-520GU via wired connections, right?

Would it be possible for them to connect wirelessly to the ASUS WL-520GU? Would I need one router for receiving and one for transmitting (this is getting complicated)?


Current situation:

I haven't set up the ASUS router yet, but is it possible to do a "site survey" nearby networks that the router can see using DD-WRT or Tomato firmware? I'm leaning more towards Tomato since it looks a bit more user-friendly.

If this doesn't work out, there is a municipal open network for which I do get a weak signal with my laptop, but I don't want to rely on that due to security.

Worst come to worst, I subscribe to Comcast's basic plan for $25/month for 1Mb/384kb (the only broadband provider for my area). Alternatively, I may talk to neighbors who are currently subscribed, and work out some sharing arrangement with them.
 
Dec 10, 2005
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Originally posted by: Jawadali
I haven't set up the ASUS router yet, but is it possible to do a "site survey" nearby networks that the router can see using DD-WRT or Tomato firmware? I'm leaning more towards Tomato since it looks a bit more user-friendly.

Yes you can. There is an option in Tomato to take a look at what nearby networks you can pick up.
 

JackMDS

Elite Member
Super Moderator
Oct 25, 1999
29,538
418
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You can configure the Asus as a Repeater.

By doing so it would Receive signal and transmit it into your environment.

However Repeating cuts the second signal's bandwidth into half, thus if your initial signal is low the secondary signal might be nonefunctional.

Never the less, it takes only few minutes to try this thing.

Have Fun. :D