200m possible with wifi?
 

I'm searching for a way to make a reliable networklink between my and my girlfriends computer.

My modem is capped to 15kbps upload, which is way too low. 50 to 100kbps should suffice.

Her dorm room is located about 200~250meters from mine. Except the walls of my and her house, there's nothing but a few trees in between it. Is this duable with a good wifi router + wifi card with a large antenna or is this wishfull thinking?

How do those "outdoor wifi antenna" work and would this solve my problem?

did you try google?

http://www.google.com/search?q=outdo...e=off&c2coff=1

wifi isn't 100% leak free ^^.

leak free meaning...

It isn't potty trained?

Net WLAN D-Link ANT24-1201 Indoor Richt.
ArtNr.: 13471
12 dBi Outdoor Yagi-Antenne (Richtfunk)
Antennengewinn: 12dBi // VSWR: 1.5 max
Geschätze Reichweite: 1000m
Frequenzband: 2400-2500MHz

That should do the trick. : )

I suppose he means that people could tap into your connection with the right equipment.

Seen it also, want to install it in my new home, pricetag is reasonable

price?

I've toyed around with a D-link antenna that should work up to 2KM in open air. works OK, with a clear view we had a good connection. try to find out how far the antenna actually reaches, just 1000meter doesn't say much

There are similar products :

Cisco Systems AIR-ANT1728
3Com 3CWE491
Netgear ANT2409

One 5.2 dBi, another 8 dBi, 12 dBi, ..

Price ranges from 80 EUR to 125 EUR (no shipping)

If someone has experience with such antenna's, or has reviews, ... feel free to add.

Guess i'll be buying/installing this around september/oktober..
Will prolly go for a DI-624 + extra antenna

I'm not sure whether I'm going for the indoor or outdoor model of the D-link ANT24-120(0/1).

Both are 12dBi (~=1000m > excellent), very cheap (62 and 66 euro at k&m), but the outdoor has a 50/50 horizontal/vertical coverage while the indoor model has a 80/23 degrees coverage. No 360/360, darn. : )

@bosw8er: 5.2dBi is about the same as a decent PCI wifi card, it's not really a signal booster in my humble opinion.

Read some of the back of forth on the matter; flexible antennae (omni / directional) will give better result. But, one thing I remember using wireless device in RF and IF in large building with lots of "metal structure" will have negative effect. Also, the number of people using Wi-Fi in the locale also have effect on performance.

I'm living in a two story house about 3,000 sq.ft.; the lot size is about 20,000 sq.ft. My laptop is working fine in my neigbor's house. However, I don't have other users in the area at all.

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Oh, when signal strength is down below 50%, you may as well forget good connection.

well pc magazine reviewed wifi.
On the cover in big letters ... WIFI NIET LEKVRIJ.

Ik kan wel opzoeken wat ze bedoelen onder lekvrij maar heb er atm geen tijd voor.

probably "security" related, if you put up a wifi connection you have to set encryption + key etc

90% of people out there don't those this, companies included.. that's what the article was probably about.

the fact that you randomly quote a sentence from a magazine that uses the word "wifi" in their title without understanding or checking up on what they mean.. doesn't bode well for you :p

Yeah, 90% of the time your internet connection is free in a big city because; like Jmke said 90% of them don't set up WEP and Key security. The signal strength is sooooo damn good because there must be a dozen users out there opening up the "free" air wave just for you.:p

... it's possible to secure it very well, big companies can rely on it's security

even if you have set up WEP encryption and your network is closed, it's not so hard to get in. you can get around MAC restriction too. if a company has a very well secured network (firewall etc.) and wifi, it's just like leaving the backdoor open

when I've got a 2nd machine here with a wireless connection, I'll see how long it takes to break my own security

The question remains how you setup share files; or how generous you are in many ways.;)

WiFi remains extremely leaky indeed. (securitywise)

the corp where my dad works mostly has fixed workstations with cat5 UTP connections, but many of the laptops run on WiFi. i did some jobs there and IT told me that since the corp deals with extremely sensitive (privacy) information the outside walls have been coated with special paint that stops any transmissions and the windows have been modded too (don't know how).

sounds like mission impossible or james bond to me, but it's true :)

nevertheless, this has little to do with the topic so i'll shut up now :^D

If TRUE, I certainly think otherwise, you are better off not to use WiFi or WiFi is not suitable for the company.

use a rotating 256 bit password AND MAC adress filtering.

Try beating that any time soon.

If someone over there opens a window, is that concidered a security leak ???

Those company's normally use a radius server. That's probably the best way to secure their wifi at the moment.
Also the latest wifi's have WPA which is already a lot better than 256bit WEP.

I use 128bit WEP, shouldn't that be good enough for a basic home wlan?

are you doubting me, boy? :grin:

why would you doubt me? :( *snif*

and no i dont have a clue why they especially need WiFi. (yes it's easy for the laptops, but it's not really that hard to plug in a wire either :D)

:^D @ window leak

but no, there is massive airco-system, controlled in each officespace/room seperatly, so there is no need to open a window. furthermore i'm pretty sure opening one would result in an alarm going off.

as for passwords and stuff, i really dont know, we didnt talk about it.

This boy is 33 years older than you which makes you non-existence.:)

that's enough, yes. but keep in mind: when an intruder manages to capture enough packets (~500MB I think), he's able to break the WEP key

128bit wep is sufficient for home use. Besides, you could always keep an eye on who the users are at any given time within your network.