Python mock ICMP Packet

Mainly use Scapy to complete

Basic Environment

VM1 (192.168.1.226)

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VM2 (192.168.1.125)

VM1 encapsulation ICMP packets sent to VM2

VM1 script:

#! /usr/bin/env pythonfrom scapy.all Import *target = "192.168.1.125" IP = IP () ICMP = ICMP () ip.dst = Targeticmp.type = 0icmp.c Ode = 0send (ip/icmp)

VM2 Script

From scapy.all import *packetcount = 0def customAction (packet):    global packetcount    Packetcount + = 1    If Len ( Packet) >0 and Len (Packet[0]) >1:      if Hasattr (packet[0][1], ' src ') and packet[0][1].src = = ' 192.168.1.226 ' and packet[0][1].dst== ' 192.168.1.125 ':        print packet.show ()    #return "packet #%s:%s ==>%s"% (Packetcount, PACKET[0][1].SRC, PACKET[0][1].DST)    return Nonesniff (filter= "IP", prn=customaction)

　　

This way we can use iptables to add rules that restrict ICMP to various types of code packages.

Reference

Http://www.nthelp.com/icmp.htmlhttps://www.oregontechsupport.com/articles/icmp.txt

Python mock ICMP Packet