[英]Send packet with scapy
I'm trying to send a simple ICMP packet from HOST B to HOST A我正在尝试从主机 B 向主机 A 发送一个简单的 ICMP 数据包
This is my configuration:这是我的配置:
HOST A
10.0.1.10 with gateway set to 10.0.1.24
Router
NIC 1 10.0.1.24
NIC 2 192.168.100.1
HOST B
192.168.100.3
A: 10.0.1.10 <---> 10.0.1.24 |NIC-1 Router NIC-2| 192.168.100.1 <---> 192.168.100.3: B
But when I try to send the packet with但是当我尝试发送数据包时
send(IP(dst="10.0.1.10")/ICMP()/"Hello World")
nothing shows up on the tcpdump
of the router.路由器的
tcpdump
上没有显示任何内容。 With和
sendp(IP(dst="10.0.1.10")/ICMP()/"Hello World")
instead, this shows up相反,这出现了
09:41:16.398305 00:00:40:01:4b:20 (oui Unknown) > 45:00:00:27:00:01 (oui Unknown), ethertype Unknown (0xc0a8), length 60:
0x0000: 6403 0a00 010a 0800 a631 0000 0000 4865 d........1....He
0x0010: 6c6c 6f20 576f 726c 6400 0000 0000 0000 llo.World.......
0x0020: 0000 0000 0000 0000 0000 0000 0000 ...........
It looks like a malformed packet, and nothing is forwarded to HOST A
它看起来像一个格式错误的数据包,没有任何东西转发给
HOST A
The machines can ping correctly, what did I do wrong?机器可以正常ping,我做错了什么?
edit:sr1 output编辑:sr1 output
13:25:58.235650 08:00:27:44:d7:c8 (oui Unknown) Null > Broadcast Unknown DSAP 0x08 Unnumbered, 27, Flags [Command], length 54
0x0000: 0800 2701 507f 0800 2744 d7c8 0800 4500 ..'.P...'D....E.
0x0010: 0028 0001 0000 4001 4b1f c0a8 6403 0a00 .(....@.K...d...
0x0020: 010a 0800 26a8 0000 0000 4845 4c4c 4f20 ....&.....HELLO.
0x0030: 574f 524c 440a
Solved.解决了。 For someone that is a "noob" with this tool like me: The router was not forwarding the packet to the subnet because it was malformed.
对于像我这样使用此工具的“菜鸟”的人:路由器没有将数据包转发到子网,因为它格式错误。 I sniffed a regular ICMP packet acting as a MiTM,and it worked.
我嗅探了一个充当 MiTM 的常规 ICMP 数据包,它起作用了。 HOST 1 received the packet correctly.
HOST 1 正确接收到数据包。
Carcigenicate
also guessed right, be sure to set the correct interface. Carcigenicate
也猜对了,一定要设置正确的界面。
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