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Rogue User


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Showing 1-14 of 14 posts in this discussion
Initial post: Sep 24, 2008 4:14:58 PM PDT
Robert says:
I have a rogue user eating up my bandwidth. What tool do I need to locate?

In reply to an earlier post on Sep 29, 2008 10:05:52 AM PDT
I'm assuming that you have a wireless router and one of your neighbors is attaching to it. You need to secure your router with a WEP key or a WPA key. Your router should have an online help or a CD with a PDF that explains how to secure it.

In reply to an earlier post on Sep 29, 2008 10:24:48 AM PDT
Robert says:
A WEP key is in place. This is for guests, so we don't want anything more complex.
The question is about locating a user, not securing access points.

In reply to an earlier post on Oct 7, 2008 8:23:30 AM PDT
Last edited by the author on Oct 7, 2008 8:25:54 AM PDT
L. Sampas says:
So it's not about saving bandwidth, but finding someone using wireless with a known WEP key. Just sniff the traffic until you find their signon for email/blog/pron or whatever it is they're downloading. There are several free wireless sniffers available, even for windows. Kismet, Airsnort, Wildpackets. If you plug in with a hub between the access point and router, then you don't even need a wireless packet sniffer. Just use wireshark and look for high bandwidth consumers.

Using radio signal alone, you could use a spectrum analyzer and wander around your area until the signal gets strong. A Rohde & Schwarz FSH18 goes for about $18,500. You could also hire a TSCM professional.

Or you could just change the WEP key.

In reply to an earlier post on Oct 7, 2008 8:40:06 AM PDT
Robert says:
Thanks. The spectrum analyzer, sort of, was the answer. We knew the machine and mac address, just couldn't find the physical location. I walked around the floors watching my MACs signal strength indication until I'd narrowed the location down to within a few tens of feet and voila, there was a laptop sitting behind a guy, online, but not physically connected to the network. Explained that the purpose of the wireless network was to allow outside vendors access to the Internet, not to have our employees uploading via limewire. He got the message.

Posted on Oct 9, 2010 7:59:20 PM PDT
I use I.P. scanner a free download. The other solution that worked for me was to turn off my router when I wasn't home. I also have a WPA/WEP dual protected network, however due to the range of the N routers ... it also became apparent to me that my bandwidth was compromised. That all changed when I added my fifth desktop. Now my ISP has disallowed new units to connect to my signal. There was a nasty shout that was audible over the shared walls of the condo as I installed my new mac. Never had a problem since.

In reply to an earlier post on Oct 25, 2010 5:22:24 PM PDT
Stapler says:
WEP is no longer secure. It has been hacked.
You need to reset the router's security setting to WPA or preferably WPA-2.
Anything less and your inviting the whole world into your system.

In reply to an earlier post on Dec 1, 2010 2:23:05 PM PST
iPC says:
Most routers allow you to block specific MAC addresses. I've blocked suspicious MACs just to bring the user out of the wifi wood-work to have a talk. Of course, there are ways around a blocked MAC but few folks are aware.

Posted on Dec 9, 2010 5:04:24 PM PST
Terible Teri says:
Sorry this is a bit OT but I have a WPA (two macbooks and a wireless netgear router). they both were great w/ internet. then modem died, comcast lent me a modem for a week or so so i could get access to buy a new modem. everything worked fine then too. But as soon as I put in the new modem, now one of the macs won't work on my network. This mac will still work if its hooked up by ethernet or if i try one of my neighbor's unsecure connections, but not my own connection. any advice? The mac in question is a white macbook (not unibody), with Leopard updated (came w/ leopard). The other mac that works is a black first gen macbook, tiger 10.4.11.

just in case of errors, i've run:
cocktail, onyx, applejack, tinker tool system, disk utility and diskwarrior (ran first)... i've also done "assist" in system preferences networking tab for troubleshooting....

thanks for your help,
teri

Posted on Dec 10, 2010 2:17:29 AM PST
MikeT says:
I'd try temporarily turning off your routers encryption see if it connects. You will have to tell your Mac to not use encryption as well. If it does connect then your problem is likely an incorrect encryption passphrase on the Mac.

In reply to an earlier post on Dec 29, 2010 4:58:20 PM PST
Terible Teri says:
Thanks MikeT, apparently the router went kaaput! in a week of the modem. hmmm.... My cold war robot is at it again! I got airport express however, it only has one ethernet and one usb port. I need access for my wireless printer/scanner/copier (canon pixma mp800r), i already have an ooma telo (a voip device) hooked up between the modem and airport, but the printer is left out in the cold, need another ethernet port for the canon, i'm going to look up whether i can network the printer too then i can put the printer in between like i did the ooma, if not what are my options? sorry to hijack this thread. i'll repost to the main group after i check out the manual on the canon site. thanks again for your time.

teri

Posted on Dec 30, 2010 3:17:05 AM PST
Last edited by the author on Dec 30, 2010 3:17:28 AM PST
MikeT says:
You should be able to add a simple ethernet switch. Switch connects to Airport, all wired devices connect to the switch. Make sure it is a Switch and not a Hub. Also be careful of how the Airport allows devices to connect via WiFi. Airport has a "guest" network for WiFi devices to protect your computer from being accessed from temporary WiFi connections. The guest WiFi devices are on their own network so they cannot be seen or shared by the devices on the non-guest network.

I use two of these Zonet 8 port 10/100 switches in my network:
http://www.monoprice.com/products/product.asp?c_id=105&cp_id=10521&cs_id=1052104&p_id=1935&seq=1&format=2
Your reply to MikeT's post:
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Posted on Mar 5, 2011 11:17:47 PM PST
Maggie32216 says:
Gosh, I don't want to hijack this thread, but my question seems somewhat related. Our business is just down the street, and we have been able to access the internet connection 100% of the time while at home using our HP Pavilion. We now have a new Apple Notebook Pro with their Airport Express system, only the signal is now too weak to allow us to connect...we can see the name for our business network access listed but the Airport receiver is just too weak to connect. We purchased the Apple @ Best Buy and the Geek Squad told us we needed an "external WiFi antenna" to help boost the range/reception -- except they don't sell them and had no brand to recommend. The more we search for this "antenna" the more confused we become.

Hopefully someone could provide us with a specific brand and part number for a decent antenna that will be just what we need. We spend SO much $$$ for Internet access for our business that it drives me crazy to think we might have to pay an additional $60 so our daughter can check her Facebook account! Thanks so much for reading this.

Maggie

Posted on Mar 18, 2011 6:53:15 AM PDT
Last edited by the author on Mar 18, 2011 6:53:47 AM PDT
D. Jenkins says:
There is a consistant problem with alot of your questions.... Mac
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Discussion in:  Wireless forum
Participants:  10
Total posts:  14
Initial post:  Sep 24, 2008
Latest post:  Mar 18, 2011

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