promiscuous mode?

[pratham2003]

Is it possible to open a device in promiscuous mode?

[mscdex]

Currently network devices are always opened in promiscuous mode.

[AlllenShen]

Is it in promiscuous mode using winpcap? I captured tcp packets with a WLAN device, and result showed that there is no packet send to or from other devices. I'm using filter='tcp'. Is that right?