Difference between non promiscous and promiscous modes in packet sniffing?

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Difference between non promiscous and promiscous modes in packet sniffing?

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10-03-2015

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Difference between non promiscous and promiscous modes in packet sniffing?

I am using a packet sniffing program.

When i use the promiscous mode, i can see in the packets that there is an IP involved(192.168.1.73) in either "from" or "to", which is not my machine's IP( 192.168.1.185).

However, in the non promiscous mode, only packets involving my machine's IP are evident.

Can i conclude that in the promiscous mode, the sniffer program is checking for all packets in my local area network and hence could also capture a packet of another machine in my LAN?

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10-04-2015

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Yes. As far as there are any packets destined for other machines, because today's switches try hard to isolate single branches of the network:

Quote:

Unlike less advanced network hubs, a network switch forwards data only to one or multiple devices that need to receive it, rather than broadcasting the same data out of each of its ports.

(c.f. http://www.digplanet.com/wiki/Network_switch)

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