Question about Computers & Internet
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Posted on Jul 26, 2008
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Posted on Apr 30, 2008
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Feb 23, 2015 | Computers & Internet
on Dec 26, 2009 | Computers & Internet
Two scenarios come to mind immediately: routers and bad IP detection.
As I've discussed before, a router allows several computers to share a single internet connection. One side effect of doing so is that all the computers that are sharing that connection appear on the internet as having the same IP address. The internet IP address actually belongs to the router, and it manages the routing the appropriate data to and from the appropriate computer behind it.
If you're in a home or small business that uses a router to share an internet connection, then any of the other computers could have voted and appeared as having come from the same IP address your computer would.
If you're connecting from a larger facility, say a school or corporation, the same issue can arise. Many facilities connect their internal network to the internet through a set of routers. A company of several thousand might appear as only a handful of IP addresses on the internet. If someone else within the company voted, it's quite possible that you might appear as the same IP address when you attempt to vote later.
"Using just the IP address to counter voter fraud and other types of abuse is common because it's easy." And then there's AOL.
When last I checked, I believe AOL puts all of its subscribers behind the equivalent of a collection of routers. Therefore when you as an AOL user connect to a web site you may be using the same IP address as some other AOL subscriber who came before you.
There's another problem that could be at play here as well.
If you're behind a router, your IP address is an IP address on your local network, not the internet. Most consumer routers use the 192.168.1.x range. In fact, most will start assigning IP addresses at 192.168.1.1, then 192.168.1.2, then 3 and so on.
As a result there are thousands of machines out there at IP address 192.168.1.1 on their local network.
If the voting abuse software attempts to use the IP address of the machine rather than the IP address of the machine's connection to the web site, then it'll just be wrong. The first person with an IP of 192.168.1.1 might be able to vote, but all that follow would be seen as coming from the same address.
It's very unlikely, but it is one additional way that the voting abuse detection scheme might fail.
Using just the IP address to counter voter fraud and other types of abuse is common because it's easy. As you can see, that often has the unintended side-effect of blocking more than just a single abuser. Unfortunately blocking an individual computer for these types of accesses is difficult - at least doing so in a way that isn't trivial to circumvent is difficult. The most common alternate approach is to require registration and login to vote, which naturally reduces the number of voters as people are reluctant to jump through the additional hoops.
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