Re: help with libpcap and tcpdump

[Guy Harris <guy () alum mit edu>]

On Jan 6, 2010, at 11:08 AM, Tiago Duque wrote:

> I am trying to develop an application to a small project I have in my
> university.
> The application only needs to discover other wireless clients, with the
> following parameters:
> - Name of the client (ID)

By "clients" do you mean, for example, other computers (i.e., are you thinking of "STAs", to use the 802.11 
terminology)?

If so, what would the "name" be?  There's the SSID, but that identifies the network ("service set"), not individual 
STAs on the network.

You could translate the MAC address of a STA to a name, but that would require that you have a list of names 
corresponding to MAC addresses.  You could also translate IP addresses to names, but there's no absolute guarantee that 
a given STA isn't routing packets from some other machine, so there's no guarantee that the source IP address for a 
packet is an IP address for the STA that transmitted the packet.
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