Wireshark · Ethereal-dev: Re: [Ethereal-dev] help needed about libpacp

[Guy Harris <gharris@xxxxxxxxx>]

Questions about libpcap are best asked on the 
tcpdump-workers@xxxxxxxxxxx list, but...

akshar SNIFFER wrote:

> I am planing to develop a WLAN sniffer , Can we set the WLAN card to promiscus
> mode using PCAP library .

Libpcap has a "promisc" argument to "pcap_open_live()"; if that argument 
is non-zero, libpcap will attempt to put the network interface into 
promiscuous mode.

Whether that *works* depends on the driver for the network interface. 
On Windows, unfortunately, promiscuous mode doesn't work very well.  It 
tends to work better on Linux and the BSDs.