I use the below scapy code to sniff and then spoof on the IP addresses.pdf

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I use the below scapy code to sniff and then spoof on the IP addresses 1.2.3.4 and 8.8.8.8 and it works perfectly fine. However, when I ping the IP address 10.9.0.99 , I get the Destionation Host Unreachable. What is the reason for that? Please give your answer clear and legible format. The Machine that I ping the addresses has the IP address 10.9.0.6. Thank you! # code starts here #!/usr/bin/env python3 from scapy.all import * def spoof(pkt): if ICMP in pkt and pkt[ICMP].type == 8: print("Original Packet.........") print("Source IP : ", pkt[IP].src) print("Destination IP :", pkt[IP].dst) ip = IP(src=pkt[IP].dst, dst=pkt[IP].src, ihl=pkt[IP].ihl) icmp = ICMP(type=0, id=pkt[ICMP].id, seq=pkt[ICMP].seq) data = pkt[Raw].load newpkt = ip/icmp/data print("Spoofed Packet.........") print("Source IP : ", newpkt[IP].src) print("Destination IP :", newpkt[IP].dst) send(newpkt, verbose=0) sniff(filter=icmp and src host 10.9.0.6, prn=spoof_pkt) # code ends here .

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I need help building a dictionary for the unique packets that this script captures that will then add them to the created PrettyTable. It needs to also keep track of the number times that the unique packets occur. The below is the code I have and what the dictionary needs. Thank you for your help! You will create a dictionary entry for each unique packet observered Unique Packets combination of SRC-IP, DST-IP, Protocol you will keep track of the count of each unique packet in the dictionary STRUCT UNPACK FORMATTING NOTES Format C Type Python type Standard size x pad byte no value c char bytes of length 1 b signed char integer 1 B unsigned char integer 1 ? _Bool bool 1 h short integer 2 H unsigned short integer 2 i int integer 4 I unsigned int integer 4 l long integer 4 L unsigned long integer 4 q long long integer 8 Q unsigned long long integer 8 n ssize_t integer N size_t integer e (6) float 2 f float float 4 d double float 8 s char[] bytes p char[] bytes P void* integer ENCODING Character Byte order Size Alignment big-endian standard none ! network (= big-endian) standard none IP Packet ''' import socket import os from prettytable import PrettyTable # Get the HOST to Sniff From hostname = socket.gethostname() HOST = socket.gethostbyname(hostname) #HOST = 'localhost' import ipaddress import struct class IP: def __init__(self, buff=None): header = struct.unpack('> 4 self.ihl = header[0] & 0xF self.tos = header[1] self.len = header[2] self.id = header[3] self.offset = header[4] self.ttl = header[5] self.protocol_num = header[6] self.sum = header[7] self.src = header[8] self.dst = header[9] # human readable IP addresses self.src_address = ipaddress.ip_address(self.src) self.dst_address = ipaddress.ip_address(self.dst) # map protocol constants to their names self.protocol_map = {1: "ICMP", 6: "TCP", 17: "UDP"} def main(): socket_protocol = socket.IPPROTO_IP sniffer = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket_protocol) sniffer.bind((HOST,0)) sniffer.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1) sniffer.ioctl(socket.SIO_RCVALL, socket.RCVALL_ON) captureDict = {} for i in range(1,10000): packet = sniffer.recvfrom(65565) # Wait for Packet basePacket = packet[0] # Extract Packet Data from tuple pckHeader = basePacket[0:20] # Extract the packet header ipOBJ = IP(pckHeader) # Create the IP Object # Lookup the protocol name try: protocolName = ipOBJ.protocol_map[ipOBJ.protocol_num] except: protocolName = "Unknown" print("SRC-IP :", ipOBJ.src_address) print("DST-IP :", ipOBJ.dst_address) print("Protocol:", protocolName) ''' Dictionary code HERE Once you have processed 10,000 packets update load your results into the prettytable and display. ''' tbl = PrettyTable(["Occurs", "SRC", "DST", "Protocol"]) print(tbl.get_string(reversesort=True)) sniffer.ioctl(socket.SIO_RCVALL, socket.RCVALL_OFF) if __name__ == '__main__': main().

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Could you take a look at this Python code. Towards the bottom, in the main() function, I am trying to apply a key-value pair to a pretty table and count the number of instances of the source and destination IPs. Thanks for the help. import socket import os from prettytable import PrettyTable # Get the HOST to Sniff From hostname = socket.gethostname() HOST = socket.gethostbyname(hostname) #HOST = 'localhost' import ipaddress import struct class IP: def __init__(self, buff=None): header = struct.unpack('<BBHHHBBH4s4s', buff) self.ver = header[0] >> 4 self.ihl = header[0] & 0xF self.tos = header[1] self.len = header[2] self.id = header[3] self.offset = header[4] self.ttl = header[5] self.protocol_num = header[6] self.sum = header[7] self.src = header[8] self.dst = header[9] # human readable IP addresses self.src_address = ipaddress.ip_address(self.src) self.dst_address = ipaddress.ip_address(self.dst) # map protocol constants to their names self.protocol_map = {1: "ICMP", 6: "TCP", 17: "UDP"} def main(): socket_protocol = socket.IPPROTO_IP sniffer = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket_protocol) sniffer.bind((HOST,0)) sniffer.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1) sniffer.ioctl(socket.SIO_RCVALL, socket.RCVALL_ON) captureDict = {} for i in range(1,100): packet = sniffer.recvfrom(65565) # Wait for Packet basePacket = packet[0] # Extract Packet Data from tuple pckHeader = basePacket[0:20] # Extract the packet header ipOBJ = IP(pckHeader) # Create the IP Object # Lookup the protocol name try: protocolName = ipOBJ.protocol_map[ipOBJ.protocol_num] except: protocolName = "Unknown" print("SRC-IP :", ipOBJ.src_address) print("DST-IP :", ipOBJ.dst_address) print("Protocol:", protocolName) sourceIP = ipOBJ.src_address destinIP = ipOBJ.dst_address proto = protocolName captureDict[(sourceIP, destinIP, proto)] = captureDict.get((sourceIP, destinIP, proto), 0) + 1 for key, value in captureDict.items(): sourceIP, destinIP, proto = key tbl = PrettyTable(["Occurs", "SRC", "DST", "Protocol"]) tbl.add_row([value, sourceIP, destinIP, proto]) print(tbl.get_string(reversesort=True)).

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