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Wireless Security fun
Aegeri
Tiny wee bacteriumsPlateau of LengRegistered User regular
Tiny wee bacteriumsPlateau of LengRegistered User regular
So here is the situation. I live in a flat with 7 other people and the landlord provides a communal phone and internet connection. Naturally, the internet connection being shared by so many people, except me because recently I got fed up and got my own, causes issues. The latest piece of drama is that someone has added security to the wireless network and not told anyone else in the house about it. The result is that the two people who used wireless cannot use the internet (and are very pissed off), while the others have taken the available LAN connection slots.
Now, I cannot prove who did it, but I have a very solid idea as there is one couple in this flat who think they own the phone and internet. They basically have a long cable into the modem and spend all day downloading. Checking server traffic logs, you can see they take 90% of all the bandwidth (which is why I gave up on it and got my own internet, because there was no getting even a decent connection speed with someone constantly downloading). I suspect they are the ones who have stuck the security on and haven't told anyone else. The landlord has become involved in the dispute, but he doesn't know much about computers and so I suspect won't be able to break the encryption on the wireless anyway.
Effectively, for various reasons, it will probably end up being my job to find out what has happened. I have several goals with this:
A) Either find out what the encryption is so I can tell everyone and the landlord
Break the security and replace it with my own, so that I can in fact tell people what it is
C) Reset the modem and let the landlord decide what he wants to do.
There is a complication. The simplistic route would be to take my lan cable, plug it into the modem and just access the modems settings. Unfortunately, whoever did this seems to have changed the administration password on the modem as well. Due to getting my own internet, I never thought to do either of things myself (which has turned out to be a bad idea) so someone else evidently decided to do this and has basically cut off the wireless users. It does mean upstairs is a delightful mess of cables however.
Now, I have physical access to the modem and everything else associated with it. The modem itself is a D-Link DSL-G604t. Any help would be appreciated, but bear in mind that going to immensely strenuous lengths is not particularly worth it: I'm just doing this because I said I would look into it. If there isn't anything I can do, that's fine, it's ultimately the landlords responsibility! If there is something I can do, that would be appreciated.
Now, I cannot prove who did it, but I have a very solid idea as there is one couple in this flat who think they own the phone and internet. They basically have a long cable into the modem and spend all day downloading. Checking server traffic logs, you can see they take 90% of all the bandwidth (which is why I gave up on it and got my own internet, because there was no getting even a decent connection speed with someone constantly downloading). I suspect they are the ones who have stuck the security on and haven't told anyone else. The landlord has become involved in the dispute, but he doesn't know much about computers and so I suspect won't be able to break the encryption on the wireless anyway.
Effectively, for various reasons, it will probably end up being my job to find out what has happened. I have several goals with this:
A) Either find out what the encryption is so I can tell everyone and the landlord
Break the security and replace it with my own, so that I can in fact tell people what it isC) Reset the modem and let the landlord decide what he wants to do.
There is a complication. The simplistic route would be to take my lan cable, plug it into the modem and just access the modems settings. Unfortunately, whoever did this seems to have changed the administration password on the modem as well. Due to getting my own internet, I never thought to do either of things myself (which has turned out to be a bad idea) so someone else evidently decided to do this and has basically cut off the wireless users. It does mean upstairs is a delightful mess of cables however.
Now, I have physical access to the modem and everything else associated with it. The modem itself is a D-Link DSL-G604t. Any help would be appreciated, but bear in mind that going to immensely strenuous lengths is not particularly worth it: I'm just doing this because I said I would look into it. If there isn't anything I can do, that's fine, it's ultimately the landlords responsibility! If there is something I can do, that would be appreciated.
Aegeri on
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The encryption is most likely WPA and as such would require a passphrase in order to connect to the router for internet access. WEP keys tend to confuse layfolk. If they changed the admin password on the router though then you may not be able to determine who it was.
Primary DNS
Secondary DNS
Gateway
Subnet
And if you have a static ip, then you'll need that as well (sometimes called an XIP).
I think that's all it should take.
DD-WRT firmware can do that although I would not recommend installing new firmware to anyone unless I knew they could find their way around a router reasonably well.
It's not rocket science but it can be confusing the first time and done wrong can brick a router.
http://www.dd-wrt.com/dd-wrtv3/index.php
edit- I don't see that router on the supported hardware list so if you need that feature you'll have to look elsewhere