使用python檢測ARP掃描

Question

我想檢測是否有人在網絡上執行ARP掃描並顯示源IP。 意外的ARP請求數量不足以檢測ARP掃描。 這是我的代碼-

import pyshark

cap = pyshark.FileCapture('arpscan.pcap',display_filter='arp.opcode==1 && arp.dst.hw_mac==00:00:00:00:00:00',only_summaries=True)
count=0
for pkt in cap:
    count=count+1

if count>10:
    print (" ")
    print ("Someone is scanning your network!\n\n")
    print ("For Attacker's Ip, visit 'Tell' section in summary below\n\n ")
    print("----Further details----")
    print "No of ARP Request Packet Received: ", count
    print("----Summary of ARP packet Received---")
    for pkt in cap:
        print (pkt)
else: 
    print ("No ARP scan identified!")

我想提取源IP，即數據包的Tell部分中的IP。 我沒有這樣做。 有人可以告訴我如何顯示源IP嗎？

Answer 1

我找到了解決方案。 可以使用scapy代替pyshark！

from scapy.all import *


packets = sniff(offline=filename,filter='arp')
source='' 
source_mac=''
count=0

for pkt in packets:
    if pkt[ARP].op==1:
        count=count+1
        if count==5:
            source = pkt.sprintf("%ARP.psrc%")
            source_mac = pkt.sprintf("%ARP.hwsrc%")


if count>10:
    print "\nSomeone is scanning your network!"
    print "Source (IP): ",source
    print "Mac Address of Attacker: ",source_mac

else:
    print ("No Scan Identified!")

另外，我們可以使用scapy訪問is_at和Tell字段：

operation = packet.sprintf("%ARP.op%")
if operation=="is_at":
   #do stuff