Python Penetration Testing Cookbook

How to do it...

Here are the steps  to create a basic packet sniffer with socket module:

1. Create a new file called basic-packet-sniffer-linux.py and open it in your editor.
2. Import the required modules:

import socket 

3. Now we can create an INET raw socket:

s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP) 

Both reading and writing to a raw socket require creating a raw socket first. Here we use the INET family raw socket. The family parameter for a socket describes the address family of the socket. The following are the address family constants:

• • AF_LOCAL: Used for local communication
  • AF_UNIX: Unix domain sockets
  • AF_INET: IP version 4
  • AF_INET6: IP version 6
  • AF_IPX: Novell IPX
  • AF_NETLINK: Kernel user-interface device ...