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Python Network Programming
book

Python Network Programming

by Abhishek Ratan, Eric Chou, Pradeeban Kathiravelu, Dr. M. O. Faruque Sarker
January 2019
Beginner to intermediate content levelBeginner to intermediate
776 pages
19h 58m
English
Packt Publishing
Content preview from Python Network Programming

How to do it...

We will use dnspython for the DNS zone transfer.

Listing 11.4 gives a simple code for a zone transfer as follows:

#!/usr/bin/env python 
# Python Network Programming Cookbook, Second Edition   -- Chapter - 11 
# This program is optimized for Python 2.7.12 and  Python 3.5.2. 
# It may run on any other version with/without  modifications. 
 
import argparse 
import dns.zone 
import dns.resolver 
import socket 
 
def main(address): 
    soa_answer = dns.resolver.query(address, 'SOA') 
    master_answer = dns.resolver.query(soa_answer[0].mname, 'A') 
    try: 
        z = dns.zone.from_xfr(dns.query. xfr(master_answer[0].address, address)) names = z.nodes.keys() names.sort() for n in names: print(z[n].to_text(n)) except socket.error as e: print('Failed to perform zone ...
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Publisher Resources

ISBN: 9781788835466Supplemental Content