RHEL7CentOS7 - Installation, Configuration & Management

Setting up MASTER SLAVE DNS setup with BIND In this tutorial we will discuss how we can create a master slave DNS server setup.  In Master Slave DNS setup when a slave is created, it obtains an identical copy of all master records using zone transfer method.  Master-slave have easy replication mechanism,  as soon as a change is made on Master server, it notifies the slave & slave then fetches the data. All process taking mere seconds. Scenario Master server   dns.ltechlab.com                         Slave server    slave.ltechlab.com IP address          192.168.1.100                               IP address     192.168.1.110 We have already discussed how we can create a Master server. If you have not don...

Beginner’s guide to implementing DNS server using BIND As we know that every machine on a network has a IP address assigned to it, which is like a unique address of that machine in our network. In similar way, every website on internet has a IP address associated to it but we normally don’t use those IP addresses to access the website rather we use a name like google.com or facebook.com. Just imagine how hard would it be to remember IP addresses of all these website, if these names for not in use. So, how does these name translate into IP addresses, that’s because of DNS servers. DNS DNS (short for Domain Name System) is a service which translates IP address into domain name & vice-versa. In environment with only a limited numbers of Linux machines, we can make entries in  /etc/hosts  file for associating an IP address with a name but when you have a large infrastructure with lots and lots of systems/resources,  /etc/hosts  will not work. ...

Configure Authoritative Name Server Using BIND on CentOS 7 Table of Contents Introduction Requirements Prepare Servers Install BIND Configure Primary Server Create Zone File Configure Secondary Server Test DNS Resolution Modify Zone File Reverse DNS Troubleshoot DNS Issues Introduction BIND is the one of the most popular DNS servers used across the Internet. The server can act as an authoritative, recursive, and caching name server and it supports wide range of features. This tutorial will describe deploying primary and secondary BIND servers as authoritative name servers. This is suitable for public or private name servers, however, internal private name servers will usually include recursive and caching elements for local DNS resolution. It is  highly  recommend that primary and secondary name servers are deployed on separate networks and in separate physical locations. This allows the necessary redundancy should one name server become unavailable d...