Unique identifier of connected client

Asked May 31 '20 at 20:52

Active May 31 '20 at 20:52

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I need some help finding out what functions can be used to get as unique information as possible about the connected client. All I know is how to get the client's ip address which can represent several machines, not only the connected client.

Is it possible to request information about the machine's hardware, unique serial number etc?

Let's say I want to ban a user / client on a ip address but I dont want the ban to affect the others on the same ip.

asked May 31 '20 at 20:52

Arre

not possible. you can get only info which client send you by self – RbMm May 31 '20 at 20:54
@RbMm Can any of that information be used for my example? – Arre May 31 '20 at 20:56
what information ? – RbMm May 31 '20 at 20:58
"you can get only info which client send you by self" can any of that info be used to identify a client, except ip address – Arre May 31 '20 at 21:02
but what client send to you ? – RbMm May 31 '20 at 21:03
The comments so far are competely incorrect. The client is uniquely identified by its IP address and port. But you can't use that to ban anybody, as it's dynamic. @RbMm – user207421 May 31 '20 at 21:06
lets say its a client that doesn't send anything, just connects to socket/tcp without sending/closing – Arre May 31 '20 at 21:06
@user207421 - that ip known is in the question. port nothing give at all. *just connects to socket/tcp without sending/closing* - so you just have **nothing**, except ip address – RbMm May 31 '20 at 21:07
@user207421 is it not possible for multiple computers to share the same port on the same ip? – Arre May 31 '20 at 21:07
@Arre - port this only "callback" address. in security this is nothing at all. you want impossible – RbMm May 31 '20 at 21:09
@RbMm so how do I get impossible? – Arre May 31 '20 at 21:10
you can not. only ip - that is all what you have in general case – RbMm May 31 '20 at 21:11

Unique identifier of connected client

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