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A question about User ID numbers...

 
cnoevil incognito
06/01/2005 10:03 PM
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A question about User ID numbers...
Iīve been watching user id numbers and for the most part I came under the assumption that they were tied to a particular machine. I generally post to this forum from 2 different machines. When I post from one computer I have one user id that always stays the same, when I post from the other computer, I have a different number, but always the same. This happens whether I am logged in or not.

However, tonight, I am browsing the board and I find posts on here to a thread that are identified by the user id as coming from one of the computers I use, but I did not post it. No one else has physical access to this computer besides myself.

What is the deal with user idīs? Are they useful for identifying a user or not?
the Madman
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
got dialup
Anonymous Coward
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
Itīs either cookie based or IP address based..
cnoevil incognito
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
no dialup. both connections are dsl.
Anonymous Coward
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
damn algorithms...they get you everytime
cnoevil incognito
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
I guess it either must be a flawed algorithm or someone is hijacking in on the back of my router at one location or...since both dsl connections that I use generate dynamic ipīs then itīs likely that someone in the neighborhood also has a dsl connection that occasionally picks up my usual ip. The last scenerio seems rather unlikely since I always have the same user numbers here, without fail, which would mean that both of my dsl connections coinceedentally grab the exact same ip number every time I boot up the computer. This seems highly unlikely to me. This is what I am trying to determine.
Grendelmort
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
I was under the assumption that

5 digit numbers = a dialup (numbers are a ISP)
4 digit numbers = DSL
3 digit numbers = DSL or Cable (depends on the carrier)
2 digit numbers = High Speed Cable
1 digit number = NSA or CIA probably (havent seen one of those yet though)

I could be wrong - just a theory
Count the number of digits in the number and
see if it reflects the type of service listed above.

beer2
Anonymous Coward
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
Nope, Grendel. I have dialup and have appeared with 3, 4 or 5 digits on different days...
flame
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
Iīve had up to 12 different numbers so far..


I have dial-up..
Grendelmort
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
Oh well, just a thought
rolleyes
I always have the same UserID
Anonymous Coward
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
Flameīs right, I have dial-up and have 7 different ID #s with 3, 4, and 5 digits.
Deacon Blue
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
I have dial-up. I get several different IDīs 2,3 or 4 digits, no 5īs so far.
Starless
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
i have hi speed cable
i got the same 4 digits every time
testicle
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
this is a test...only a test
testicle 2
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
two testies are better than one
Anonymous Coward
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
The numbers are not unique to a poster. The algorithm is flawed but what does it matter really? There are a couple of other 88īs out there so if someone doesnīt like what I say I can blame it on the other 88. In fact this reply is from the other 88 ... the jerk!!

Just kidding 88. Your OK hi
Anonymous Coward
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
session idīs
cnoevil incognito
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
A session id would be a new number every time one came to the board if it follows the paradigm of client/server persistant connections would it not?

On 2 different computers I typically hav e the same 2 numbers all the time and I have not seen anyone else post here with these numbers since the user idīs came into effect. Tonight I saw a couple of posts using one of these numbers that I were not posts of mine and I am curious how this works.

The logic inherent in a known, closed system is not adding up. It raises my suspicion that there may be foul play on the router of one of the networks that I use.
Omega
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
If you have DHCP you get a new IP address whenever you renew your DHCP lease, or the lease expires. The time varient depends on the ISP. Since Trav states itīs an algo based on your IP, it makes sense if you log on with a different IP (such as a different computer or DHCP) you get a different user ID.

Static IPīs should always have the same user ID- Right Trav?
Marlboro Man
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
I have dial up and look at my number (16). I think itīs more of an order of execution. The lower you get the closer you are to the firing squad. I never see anybody in the top 10 much.
Hmmm, I better be good.scratching
Anonymous Coward
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
I have DSL too, but my ID changes every time I boot up.
Sometimes if I just disconnect or turn the modem off, it will give me a new ID (IP) number, but not always.
Anonymous Coward
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
OP - check your computerīs settings:





Make sure NO is selected for autopost.
dance
?
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
?
thirteen
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
I am 13 because Iīm thirteen.
Anonymous Coward
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
should show up as 8876
maybe better play that one
always stays the same
I removed all cookies, lets see what happens when I post
Anonymous Coward
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
all routers can be by passed by the right agency, WE are ALL monitored, right down to our IP adresses. Really, I have no doubts......they know where to find us, so whatch what you say.
molesworth NLI
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
Itīs not a "flawed" algorithm, just a way of giving a measure of identifiability to users without divulging any real information about them.

Itīs based on IP addresses, which are usually seen as 4 groups of digits separated by dots (although as far as the internal workings of your computer go, itīs really a single 32 bit number). I think the algorithm is taking part of the IP address, probably the bottom 2 groups of digits, and then manipulating them in some way to come up with a new ID value.

This means that if youīre on dial-up, or if your DSL ISP doesnīt give you a static IP address, you could get a different number every time you log in.

It also means that user IDs are not unique, so several people could end up with the same one. Even if youīre on a static IP (as I am) because it only uses part of the IP address, somebody else could have the same values for that part.

If I was really bored I could spend hours at home connecting and disconnecting on dial up, comparing IP address with user IDs, and probably work out the algorithm used. Luckily Iīm never that bored :-)
I saw one
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
"1 digit number = NSA or CIA probably (havent seen one of those yet though)"

I saw id #6 yesterday
Deacon Blue
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
As I said before, my ID is a 2, 3 or 4 digit number. Usualy it is a 4 digit number in the high 5000s (57xx, 58xx, 59xx). Occasionally, it is in the high 500s, usually 59x. The only time Iīve seen a 2 digit number, it was 60. It would be my guess that the constrained range of the first 2 digits is a result of my choice of ISP.
cnoevil incognito
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
So, my question has been answered. Thank you. I was just worried that someone was running a proxy through the router.
Anonymous Coward
12/08/2005 10:13 AM
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Re: A question about User ID numbers...
Iīm dial up and get different numbers and different amounts of numbers each time I come.





GLP