Wi-Fi??????

   / Wi-Fi?????? #21  
Some corrections here:

1. It is stealing. You're using your neighbor's bandwidth and, in some respects, stealing their identity (if you don't believe me make some "anonymous" threats against a public figure and note that they go to your neighbor's house before they pull his router logs and track you down). Whether someone's been arrested for this is irrelevant, your moral decisions should not be based on punishment but based on the right thing to do. I would try to identify where the signal is coming from and let them know it's open, they probably don't realize it and or that it's a security risk - think of this like telling your neighbor they shouldn't leave their front door open when they go out shopping. If it ends up being a local coffee shop, then while using it may not be illegal it's still like walking in, using their bathroom, and taking their sugar packets without buying anything. We need to separate out what's "legal" with what's "moral" and I find theft of service hard to justify morally.

2. While no wi-fi is 100% secure you should always use the best protection your router and laptop can support - there's just no reason not to. It's trivial to spoof a MAC address so that doesn't buy you any protection (check out your router config, most of them allow you to change the MAC right there and those Linux boot CDs give you the same option).

3. Even though any security can be broken, most of the time yours will not. If you're not an explicit target (and, let's face it, probably no one on TBN is important enough to be a directed target) most people would much rather go to a city or a wealthy suburb to find an open network than to spend the effort parked on a rural road trying to steal a farmer's bank information. Remember, the typical person doesn't have any idea that you've dropped $100k on a tractor.

4. ISPs can not read your passwords without decrypting them first, just like any hacker (but corporations are easier to trace and have much deeper pockets for fines). They also have no access to your hard drive nor can they see most of what your doing. As far as your surfing habits are concerned, if you're worried about them noticing that then should you really be going to those websites on your neighbor's computer? Doesn't seem to neighborly to me...

In summary, a wifi-enabled router can be had for <$50, I'd buy one of your own, configuring it to WPA2 security and avoid the whole moral dilemma of whether it's OK to use something your neighbor is paying for.
 
   / Wi-Fi?????? #22  
It's trivial to spoof a MAC address so that doesn't buy you any protection

since MAC addresses are hard coded into hardware devices...if you have the right software a masked address can easily be exposed...

check out your router config, most of them allow you to change the MAC right there

this allows you to set "allowed" MAC addresses...if a particular computer's NIC MAC address does not match that of the "allowed" address the router will not assign an IP

MAC address are embedded into a chip they cannot be changed/ overwritten

some cracking software will report bogus MAC addresses but they cannot be changed
 
   / Wi-Fi?????? #23  
My wireless network is unsecured, my computers whowever are as protected as they can possibly get. If somebody wants to and is able to connect to my network and access the internet, more power to them. The same goes for their network. If they don't want unauthorized access then they need to secure their network. Period !!!!!
If your neighbors floodlight lights up your backyard so you can see to barbeque, are you guilty of stealing his electricity ? I don't think so Tim !!
If your neighbors Satilite radio is turned up loud enough for you to hear, are you stealing satelite service from him ? I don't think so Tim !!
If the neighbors wife mows the front lawn naked for the world to see, are you guilty of voyerism ? I don't think so Tim !!
Please, get real !! only the **** rententive are going to consider this stealing.
If you using the signal to purposly do something deceitful, then we enter another area of discussion.
 
   / Wi-Fi?????? #24  
since MAC addresses are hard coded into hardware devices...if you have the right software a masked address can easily be exposed...

I don't believe that to be the case (either you can override the MAC address at the driver layer or you can't, there's only one field in the Ethernet header for source MAC), but even if true it's a safe bet this software isn't built into a home wifi router. ;) If you want to try it yourself in Windows this is the first Google hit.
 
   / Wi-Fi?????? #25  
I don't believe that to be the case

just becaue you don't believe something doe not make it so...

again...MAC addresses are hard coded into the chip on any NIC or wireless Ethernet adapter they can't be changed period...

yes they can be masked/spoofed but in the same respect a masked or spoofed address CAN be detected...not necessarily by cheap residential routers but they can be detected...
 
   / Wi-Fi?????? #26  
this allows you to set "allowed" MAC addresses...if a particular computer's NIC MAC address does not match that of the "allowed" address the router will not assign an IP

You're looking at the wrong spot, below is a picture of where you can set the WAN MAC address on a NetGear router. The reason they allow this is because some ISPs require MAC authentication so you need to glom the address of one of your PCs.

The default MAC is encoded into hardware, but you can override this. You need to be able to do this so you can send broadcast packets for things like ARP requests. You'll just have to trust me on this one, I've built Ethernet networking equipment.

Imageshack - macchange - Uploaded by jdbower
 
   / Wi-Fi?????? #27  
The default MAC is encoded into hardware, but you can override this.
Like I said...they can be masked or spoofed but they can't be changed (only by changing the NIC...routers are not pertinent in identifying individual nodes (computers)
the address in a residential router is insignificant...whenever the federal gov. makes a case against a computer user the ONLY proof they can use is the MAC address...it is like a finger print

I too work in the industry as a network admin.
 
   / Wi-Fi?????? #28  
Could you provide a link to the MAC spoof detection software? All I was able to find are a slew of posts that say it can't be done and a few whitepapers with heuristics, mostly requiring that both computers be on at the same time. If you have access to a computer you can tell what the given MAC address is, but if you're a network admin you can't tell whether the MAC is genuine without physical access. If you can describe the technical mechanism through which this works I'd gladly eat my words, but until then it's pretty easy to spoof a MAC via the driver and there's no remote way to determining it's faked. However, since even you've said that a residential router can't detect the spoof it's mostly a moot point since it's not a viable security mechanism for the home users here - it's just a good added precaution in addition to WPA2.
 
   / Wi-Fi?????? #29  
since you seem to be relying on search engines for your information I suggest you query something like "anomalybased intrusion detection" or just "detecting spoofed MAC addresses"
 
   / Wi-Fi?????? #30  
So I take it you're not aware of any reliable software to do this either. If you want a real-world data point the reason this is a hotbutton to me is our old incompetent IT guy only used MAC authentication (no WEP/WPA, 802.1X or anything like that) so when he was out and one of our engineers got a new laptop all he did was steal the MAC of our CTO for the day since he was leaving for an off-campus meeting. He got the MAC with a simple packet sniffer and he knew the CTO's IP from the DNS entry. Granted, this was an "authorized" intrusion, but there's no reason it couldn't have been a guy at the Panera next door.
 

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