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I've been reading about packet sniffing and was wondering if it's possible for someone to sniff packets on subnetworks other than the one they're on. Since the point of a subnetwork is that devices within the subnetwork can only communicate with other devices within the subnetwork and the router, it seems like they wouldn't be able to sniff packets on other parts of the larger network. But since all the devices on the network have access to the router, wouldn't it be possible to sniff packets from devices in other subnetworks without changing the subnet mask?
Are you referring to logical separation (different IP subnet) or physical separation (different broadcast domain)? – Daniel B – 2014-08-27T19:59:47.090
Logical separation – Tristan – 2014-08-27T20:08:11.417