domain is a very popular term used in computer and information technology. Users generally do not know or misinterpret the domain keyword meaning. The domain can be used in different areas of computer science. In this tutorial, we will learn Domain meaning and types with the purpose and difference with the Domain and Hosting. Domain Types Domain definition can be used in different areas in computer science or information technology....
Domain Name System aka DNS is used to match domain names to the IP addresses. DNS is provided over intranet and internet servers with different port numbers. TCP or UDP DNS can use both transmission protocols TCP and UDP. But general usage is over UDP protocol because of its simplicity and speed. TCP Port 53 One of the used DNS port is TCP Port 53. TCP provides stability over DNS...
Common Name or CN is generally used in SSL Certificates. CN is used to define the server name which will be used for secure SSL connection. Generally this SSL certificate used to secure connection between a HTTP/S server and client browser like Chrome, Explorer, Firefox. Common Name (CN) Common Name is used to specify the host or server identity. When a client try to connect to a remote server like...
Google is a huge company which provides paid and free services. It mainly operates in IT and internet area. Internet uses DNS in order to solve domain names into IP addresses. Because internet infrastructure works with IP addresses. Google provides free DNS servers which can be used for fast and free domain resolution. In this tutorial we will learn Google DNS features and how to use in Linux, Ubuntu, Debian,...
Hostname is used to name the systems. Normally the computer networks work with IP addresses in order to identify and communicate. But hostname provides human friendly way to name, identify, communicate with other systems. Example Hostname Hostname is just a meaningful word for the system administrators to name a system. For example we can use db1 for first database server or app3 for the third application server. Default Hostname Hostnames generally set...
Nginx web server provides a lot of different configuration about the web service. Some of the configurations are used very often. server_nameis one of them which can be miss interpreted. Single Domain Name In the old days internet was so little. There was less site and domain names than today. System administrators were prefer to assign a single domain to a single web server like Apache etc. Multiple Domain Names...
We generally see the term FQDN or Fully Qualified Domain Name and generally though that is is like a secret magic which provides some information about the servers and hosts. No. The answer is no the FQDN provides no secret or magic. We use FQDN in order to specify host names in a hierarchical manner. Below we will look how we calculate FQDN Host Name Host name is used to identify...
DNS is important protocol for internet. Without DNS protocol we can not use internet effectively. DNS resolves domain and host names into IP addressees where computers and network devices can understand and operate. In recent years DNS is used to block access to the some web sites and domain names. But internet is a free world which can provide solutions about this censorship. In this tutorial we will list publicly...
Dig stands for Domain Information Groper. Dig is used to interrogate DNS servers. It have a lot of features to interact and use DNS servers. In this tutorial we will look popular and useful dig command usages. Most of the system and network administrators uses dig to debug DNS related issues. Help Help information about dig command can be listed with the -h option.
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$ dig -h |
Man Detailed help information can...
We have a lot of computer in our network. Our network speed is not too much. Sometimes especially in mornings our internet connection slows down. How can solve this with some dns related tricks? Dns is one of the mostly used network protocol. It can effect the internet speed. Making some optimizations will develop your internet experience. Caching is to hold resolved dns queries in our dns server. There are...
