How to tell if 2 IP addresses are the same person?

[Redneck-Melly]

Hello guys,

I am wondering if there is anyway to know if 2 IP addresses are used by the same person? We have a situation on my forum and 2 users who have similar IP's but not sure if they are the same. I'm 99.9% sure it is the same person, but I would like to be 100% sure before throwing accusations...

Thanks,
mel

--------------- Added [DATE]1284087413[/DATE] at [TIME]1284087413[/TIME] ---------------

I meant to post this in VB3 General sorry about that.

[your24hourstore]

ban one ip and see what happens

[lemonadesoda]

Why is it a problem? If both "aliases" behave and contribute to the forum, then so what? If one or both are problematic, then so? Deal with it!

[G0F0RBR0KE]

What if they are brothers? Sisters? Mother? Fathers? Their boyfriend or girlfriend? Are you gonna ban them because they are sharing the same IP's

:erm:

[Lynne]

Moved to the vB3 GD forum.

We have two users on our site that have the same IP - two cousins who share an apartment.

Have you tried asking the users if they know each other or are friends? Is it really a big deal if they are the same person with two different usernames?

[kh99]

I think the OP was wondering about one person 2 ips, not the other way around. And I think I know why it's a concern, because some forums don't want to allow clones (or whatever you call one person with two user accounts). But, there really isn't any way to tell that I know of.

[BirdOPrey5]

If they got 2 different IP's then no way to tell if they are the same person... When you say IP's are very similar I assume you mean the first three values are the same and just the last set of digits is different... ?