1.capture filter 技巧:
a 捕获mac地址为00:d0:f8:00:00:03网络设备的所有报文
ether host 00:d0:f8:00:00:03
b捕获IP地址为172.17.56.254网络设备通信的所有报文:
host 172.17.56.254
c 捕获网络web浏览的所有报文
tcp port 80
d 捕获 172.17.56.254除了http外的所有通信数据报文
host 172.17.56.254 and not tcp port 80
2.如果以默认主机和端口的设置捕获tcp/ip报文,你将看不到自身的arp报文。
3.Filter string语法输入的格式:
[src|dst] host <host>
ether [src|dst] host <ehost>
gateway host<host>
[src|dst] net<net> [{mask<mask>}|{len<<len>}
[tcp|udp] [src|dst} port <port>
less|greater <length>
iplether proto <protocol>
ether/ip broadcast|multicast
<expr> relop <expr>
4符号在Filter String 语法中的定义
Equal:eq,==
Not equal: ne,!=
Greater than: gt, >
less than: lt, <
greater than or Equal to : ge , >=
less than or equal to : le, <=
5 Display filter 显示过滤
a eth.addr=00.d0.f8.00.00.03
b ip.addr=172.17.56.254
c tcp.port=80
d ip.addr=192.168.10.1&&tcp.prot!=80