January 2019
Beginner to intermediate
776 pages
19h 58m
English
book
Python Network Programming
by Abhishek Ratan, Eric Chou, Pradeeban Kathiravelu, Dr. M. O. Faruque Sarker
Content preview from Python Network Programming
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Finding DNS resource records
You may secure your DNS information with transaction signature (TSIG). This ensures a secured authorized update to DNS record. You may receive the Start of Authority (SOA) information of a host with the DNS lookup utilities host and dig. We first look at host utility followed by dig before looking into the Python code for our current recipe to retrieve the same information:
$ host cnn.com cnn.com has address 151.101.129.67 cnn.com has address 151.101.193.67 cnn.com has address 151.101.1.67 cnn.com has address 151.101.65.67 cnn.com has IPv6 address 2a04:4e42:600::323 cnn.com has IPv6 address 2a04:4e42:400::323 cnn.com has IPv6 address 2a04:4e42:200::323 cnn.com has IPv6 address 2a04:4e42::323 cnn.com mail is handled ...
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