可编程网络实验室2023暑期纳新—

可编程网络实验室2023暑期纳新	<班级的链接>
作业要求	<作业要求的链接>
作业目标	<学习并使用scapy工具和count-min sketch算法>

代码已上传至Github

一、scapy工具实现数据包的构造、发送和接收

首先在发送端构造数据包并发送

点击查看代码

from scapy.all import *

dst_ip = "192.168.163.133" #接受方ip
src_ip = "192.168.163.129" #发送方ip
packet = IP(src=src_ip,dst=dst_ip)/UDP(sport=12345,dport=54321)/Raw(load="Hello")

send(packet)

接下来在接收端接收数据包

点击查看代码

from scapy.all import *

dst_ip = 192.168.163.133
dst_port = 54321

def packet_handler(packet):
  if packet.haslayer(Raw):
    data = packetl[Raw].load.decode()
    print(f"Received: {datal}")
filter_rule = f"udp and dst host {dst_ip} and port {dst_port}"

sniff(filter=filter_rule, prn=packet_handler)