GNS3 模拟icmp路由跟踪

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GNS3 模拟icmp路由跟踪

R1 : conf t int f0/0 no shutdown ip add 192.168.1.1 255.255.255.0 no ip routing end R2 f0/0: conf t int f0/0 no shutdown ip add 192.168.1.254 255.255.255.0 end R2 f1/0: conf t int f0/0 no shutdown ip add 192.168.2.254 255.255.255.0 end R3 : conf t in…

GNS3 模拟icmp记录路由

路由配置: icmp记录路由抓取出接口的IP地址,最多可以抓取9个.ip协议头中的options为40个字节 R1 : conf t int f0/0 no shutdown ip add 192.168.1.1 255.255.255.0 no ip routing end R2 f0/0: conf t int f0/0 no shutdown ip add 192.168.1.254 255.255.255.0 end R2 f1/0: conf t int f0/0 no shutdow…

GNS3 模拟icmp重定向

网关实质上是一个网络通向其他网络的IP地址.比如有网络A和网络B,网络A的IP地址范围为“192.168.1.1~192. 168.1.254”,子网掩码为255.255.255.0:网络B的IP地址范围为“192.168.2.1~192.168.2.254”,子网掩码为255.255.255.0.在没有路由器的情况下,两个网络之间是不能进行TCP/IP通信的,即使是两个网络连接在同一台交换机(或集线器)上,TCP/IP协议也会根据子网掩码(255.255.255.0)判定两个网络中的主机处在不…

GNS3 模拟icmp分片不可达

R1 : conf t int f0/0 no shutdown ip add 192.168.1.1 255.255.255.0 no ip routing end R2 f0/0: conf t int f0/0 no shutdown ip add 192.168.1.254 255.255.255.0 end R2 f1/0: conf t int f0/0 no shutdown ip add 192.168.2.254 255.255.255.0 end 配置路由MTU: conf…

GNS3 模拟icmp禁止不可达

R1 : conf t int f0/0 no shutdown ip add 192.168.1.1 255.255.255.0 no ip routing end R2 f0/0: conf t int f0/0 no shutdown ip add 192.168.1.254 255.255.255.0 end R2 f1/0: conf t int f0/0 no shutdown ip add 192.168.2.254 255.255.255.0 end 配置路由禁止: conf t…

GNS3 模拟icmp端口不可达

R1 : conf t int f0/0 no shutdown ip add 192.168.1.1 255.255.255.0 no ip routing end R2 f0/0: conf t int f0/0 no shutdown ip add 192.168.1.254 255.255.255.0 end R2 f1/0: conf t int f0/0 no shutdown ip add 192.168.2.254 255.255.255.0 end R3 : conf t in…