George Ou had a good article on upgrading a laptops wireless to a multiband adapter. It looks like a fairly straightforward process. Personally, I’ve not risked much with regards to laptop repairs. (Keyboard replacement, battery replacement, hard drive replacement and memory have been the typical laptop repairs I’ve done – throw in optical or floppy drive swaps (remember when they had those?) and one or two lcd swaps and that covers 95%+ of what I’ve fixed with regards to laptop hardware.)
Tag: wireless
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Intel Proset Wireless update
A couple weeks back, there was a pretty important security update for the Intel Proset Wireless driver. The big problem is that the update was a memory hog and caused porblems. Sans has info on the update to the update, also George Ou is encouraging everyone to make sure they’ve got things updated. It’s possible to JUST download and install the driver without getting the full proset management software. So…. CENTRINO users – this means you… update your wireless driver.
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Skype and USB phones….
I’ve seen skype I just haven’t used it personally until very recently. In fact there was a place (dialpad?) that I had used once upon a time for a few free long distance calls online. It was neat, but had some limitations (delay). It quickly became non-free and frankly the microphone I have hooked up to the PC fell back in the corner beside the desk and I haven’t dug it out in quite a while. A few weeks ago though my Dad discovered Skype and ordered a cheap ($17) “phone” that plugs into the usb port of the pc and can be used with skype and a variety of other services. (in fact, it works as a generic usb sound card so… there might be other possibilities for using it to record wav files directly, etc.)
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The stratellite revisited
NO, I didn’t mean to type satellite. Stratellite. This is an idea that I’ve written on before and I think it has some interesting possibilities. The idea is to positition a large airship (helium balloon of sorts) in the stratosphere. Put it above the steering currents of the jet stream and equip it with the ability to stay in a fixed place for months at a time. Also, put antennas on it. For what? Whatever you need…. cell phone coverage… a wireless internet transceiver of some sort? etc.
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Mac Wireless driver Security vulnerability revisited
A couple weeks ago the hot story was about the demonstration of a vulnerability in a 3rd party wireless card driver on a Mac. The individuals that demonstrated the vulnerability (in a video taped presentation) also claimed that many wireless drivers were vulnerable to this same flaw and it included the MacBook native drivers (among others.) There was immediate controversy over the fact it was a video demo. I thought their explanation for that was reasonable. (They didn’t want to give a room full of crackers a chance to sniff the wireless traffic and get TOO much detail on the exploit before vendors had a good chance to give updates.) Well… at this point it sounds like among other things, they have not yet demonstrated to Apple an effective use of this exploit against the wireless drivers on the macbook.
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Encrypting wireless traffic
Incidents.org has been running their security tip a day this month and I really liked this one. It’s essentially a way to encrypt your wireless traffic using ssh. That’s something I’ve covered here before, but it’s worth reminding that it’s possible and a good idea.
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Wireless war rocketing?
There were several articles about a new “wardriving” technique that was talked about at Defcon (this topic and a bit more Defcon coverage here). In fact, this takes the driving out of the mix and involves launching a rocket. Essentially rockets were equiped with access points and launched to get a 6000+ foot view (for the largest) of the wireless landscape. Now, they didn’t turn up a LOT, but they did see an impressive range of area *(50 square miles for the largest). One of the smaller rockets made it to 2000 feet. It was a rural area where this was done, so they didn’t pick up much. Although it had a range of 4 miles, the big rocket could only find 2 networks.
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Wireless Driver Vulnerabilities
There are a couple notes to pass along with regards to some pretty serious vulnerabilities in various wireless network adapter drivers. First, Sans has information on some Intel Centrino updates that resolve some vulnerabilities that would affect the Windows Centrino driver and the ProSet management software. F-secure chimes in on this noting that the download is a whopping 129MB.
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Fun way to mess with wireless freeloaders….
Some people spend a lot of time finding ways to block the freeloaders from their wireless internet. Others find fun ways to mess with them…. They start off by settup up dhcpd.conf to carve out two subnets a “good” one with known mac addresses and an untrusted…. then the fun begins with some proxy side image manipulation. Either upside down images, blurry images, etc. I wonder why you don’t just take it a step further…. block images entirely and replace with a jpg of your choice. IF you have a very BUSY accesspoint with freeloaders – maybe you could even sell an ad…. or do a captive portal for the untrusted crowd that redirects through a page that says…. “Uploading personal data…. Please wait…. Credit Card info transfered…. browsing history transfered….. email history transfered…. My Documents in progress…” Of course, it would be actually doing this…
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Firewall musings…
Yesterday I had a bit of a realization. I had just been looking at a wireless router/firewall setup and was thinking about the firewalling rules (which seemed to be geared at the WIRELESS lan… i.e. blocking that activity on the Wireless segment.) You know, traditionally firewalls have had the attitude of defending the internal network from the outside. Of course, these days firewalls sometimes protect the internal network from a WLAN (Wireless segment as well.) But, I put a few events together and started looking for a new feature in a firewall.