openwrt winshak 抓取無線beacon幀

 openwrt 抓beacon幀   tcpdump -i wlan0 type mgt subtype beacon。

 winshak 抓取無線包規則

幀類型 / 子類型	過濾器文法
Management frame	wlan.fc.type == 0
Control frame	wlan.fc.type == 1
Data frame	wlan.fc.type == 2
Association request	wlan.fc.type _ subtype == 0x00
Association response	wlan.fc.type _ subtype == 0x01
Reassociation request	wlan.fc.type _ subtype == 0x02
Reassociation response	wlan.fc.type _ subtype == 0x03
Probe request	wlan.fc.type _ subtype == 0x04
Probe response	wlan.fc.type _ subtype == 0x05
Beacon	wlan.fc.type _ subtype == 0x08
Disassociate	wlan.fc.type _ subtype == 0x0A
Authentication	wlan.fc.type _ subtype == 0x0B
Deauthentication	wlan.fc.type _ subtype == 0x0C
Action frame	wlan.fc.type _ subtype == 0x0D
Block ACK requests	wlan.fc.type _ subtype == 0x18
Block ACK	wlan.fc.type _ subtype == 0x19
Power save poll	wlan.fc.type _ subtype == 0x1A
Request to send	wlan.fc.type _ subtype == 0x1B
Clear to send	wlan.fc.type _ subtype == 0x1C
ACK	wlan.fc.type _ subtype == 0x1D
Contention free period end	wlan.fc.type _ subtype == 0x1E
NULL data	wlan.fc.type _ subtype == 0x24
QoS data	wlan.fc.type _ subtype == 0x28
Null QoS data	wlan.fc.type _ subtype == 0x2C