Once, dns installed, move to the bind configuration directory, under /etc/bind. Now, install the DNS Packages bind and dnsutils using the following command. $ sudo apt-get update & sudo apt-get upgrade -y Next, we update the default repositories and do a system upgrade, before setting-up DNS cache server. To verify that the above settings are correct, we can use ‘ hostnamectl‘ and ‘ ifconfig‘ commands. Step 1: Installing DNS Serverįirst, take a look at the my local DNS server information such as static IP address and hostname, which is used to for this article purpose. Now let us set up a Caching DNS Server in Ubuntu Server 14.04 LTS. Hope you got what is DNS now, and how it works. Every above steps are done within milliseconds. So, authoritative name servers have our domain information’s, while our request reach ANS it will reply for the query that have 111.111.222.1 at the same time it will be cached in Authoritative name-server and send the request back to browser. While the domain registration, our domain registerer will define which authoritative name-server should our domain use. In Ubuntu, we used to configure the name-server in /etc/nf, while accessing my browser will ask to root name-servers, if the root name-server don’t have my requested domain information it will cache my requested information and forward my request to ( TLD) Top Level Domain name-server, even in TLD name-server my request is not available it will be cached and forwarded to Authoritative name-server. While we accessing it will ask to name server as per operating system configuration. The (.) represent the namespace Root server, there are total 13 root servers globally available. If we need to access in browser, the system will look for. Here is an easy way to understand the DNS and how it works. Setup DNS Cache in Ubuntu 14.04 What is DNS? Before going in depth we need to know about DNS server and how it works. Caching server will not hold any domain names, it will only work as a Pointing server. In most of the place, we need a reserve lookups. Here I have installed and configured cache server using forwarder, forward look-up and reserve look-up. Computers that runs DNS are called name servers. Domain Name Service ( DNS) is a Naming service that maps IP addresses and fully qualified domain names to one another.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |