Day: February 27, 2015

Middleboxes considered harmful: DNS Edition

This article is brief overview of how middleboxes interact with DNS traffic. In particular I’m interested in finding out the answers to the following:¬†Will middleboxes drop/modify DNS traffic and what is the purpose of this: stopping abuse, security, buggy implementations, advertising or censorship? Therefore does using your own stub resolver and recursive nameserver free you Read More

DNS question: Avoiding circular dependencies without glue records?

Can someone help me the understand the following: When the authoritative name server for a domain (e.g. ns1.example.com) lies within the domain over which it has authority (e.g. example.com), a query (e.g. for example.com) to the parent domain (e.g. .com) will include both the NS RRs, to delegate authority of the domain to the nameservers, Read More