Published on : April 26, 2019 by Aaden Dev
Preface:
When does DNS use TCP / UDP? This is an age-old interview question. A general answer is DNS uses TCP for Zone transfer and UDP for name queries. But letʼs try to answer why is that? TCP is a connection-oriented protocol whereas UDP is a connection-less protocol. TCP requires the data to be consistent at […]
Published on : April 24, 2019 by Smith Nevil
Preface:
One of our client needed to enable DNS cluster for his web servers. Before enabling cluster we have to make sure there are no duplicate accounts in the server. In many cases, accounts were migrated across the servers and the previous ones were not deleted. So, when enabling the cluster, the DNS of the first […]
Published on : April 22, 2019 by Smith Nevil
Preface:
Amazon Relational Database Service (Amazon RDS) is a web service that makes it easier to set up, operate, and scale a relational database in the cloud. It provides cost-efficient, resizable capacity and can manage common database administration tasks. If your site/application stores its sensitive data in the database, you will definitely want to back up […]
Published on : April 19, 2019 by Nidhin George
Preface:
ASSP is one of the free and open source anti-spam solution available. At the time of this writing, the version released is 2.6.1 and has a plethora of features, which is a good study by itself. Check out the website http://www.thockar.com/assp-home/ for a detailed list of features. However, the configuration and installation of ASSP are often […]
Published on : April 17, 2019 by Nidhin George
Preface:
For me, a sysadmin is a jack of all, master of few trades. A good sysadmin can play multiple roles effortlessly, in his professional as well as personal life. Once he is into debugging an issue, don’t disturb. That’s the only condition he would have. I agree that its difficult to document how a sysadmin […]
