物联网LWIP网络开发 广播和组播 7.4wireshark抓包验证

wireshark抓包验证

wireshark抓包工具

wireshark安装

下载地址

https://www.wireshark.org/download.html

wireshark使用

使用流程

Created with Raphaël 2.2.0 选择网卡 过滤配置

过滤器使用方法

比较运算符

    eq, ==    Equal
    ne, !=    Not Equal
    gt, >     Greater Than
    lt, <     Less Than
    ge, >=    Greater than or Equal to
    le, <=    Less than or Equal to

协议字段

#以太网过滤
eth.dst eq ff:ff:ff:ff:ff:ff
#IP地址过滤
ip.dst eq 192.168.1.10
ip.src == 192.168.1.1
#TCP过滤
tcp.port == 6666
# UDP过滤
udp.port == 6666
# http过滤
http.request.method == "POST"

位域操作

# TCP SYN
tcp.flags & 0x02

逻辑表达式

    and, &&   Logical AND
    or,  ||   Logical OR
    not, !    Logical NOT
   # tcp.port == 80 and ip.src == 192.168.2.1