Re: [tcpdump-workers] pcap filter for 802.11

p will think it is Etehrnet. > > -alexm > 15:58 16/04/2004 > > > On Apr 16, 2004, at 3:01 AM, Chen Hsia Lee wrote: > > > > > I have just started using libpcap and am still unfamiliar with it. > > > What is the filter expression to pick up only wir

[tcpdump-workers] pcap filter for 802.11

Hi, I have just started using libpcap and am still unfamiliar with it. What is the filter expression to pick up only wireless 802.11 packets? Also, what is the option for tcpdump to print the 802.11 header? Which field is used to determine that a packet is an 802.11 packet? Thanks