dns server configuration in rhel 7
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DNS Server Configuration on CentOS 7 (Caching DNS with BIND)
DNS (Domain Name System) Server is an essential part to any computer network. Today web communication cannot imagine without DNS Server. DNS is a client server protocol where DNS Client requests for the domain name resolution and DNS Server response on it. Every network should have a DNS Server because local DNS Server improves network performance by caching DNS information and serving DNS request locally. DNS Server can be configured either Windows or Linux operating system. In this article, I will discuss how to configure a caching DNS Server on CentOS 7/ RedHat 7 Linux with BIND9 Service. Domain Name System (DNS) and How It Works Communication between a workstation (PC) and a Server are always done by IP address. So, to get any information from any Web Server, you have to remember the IP address of that Server. But remembering a huge number of public IP addresses is almost impossible for the human being. To solve this issue, DNS technique is introduced in computer networking. The DNS technique can be best compared to a phone book where a user finds a phone number listed by the easier-to-remember name. So, the DNS can be defined as a mapper between human [...]
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Port Based Apache Virtual Hosting on RHEL 7 | July 26, 2019
Virtual Hosting is a method of hosting multiple domains on single web server. If you have multiple domains (such as domain1.com, domain2.com and so on) and want to host on single web server, Virtual Hosting is your right choice. Apache web server provides an easy way to manage Virtual Hosting. Virtual Hosting can be Name Based, IP Based or Port Based. In Name Based Virtual Hosting, multiple domains can be hosted on single Server and single IP address. On the [...]
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Mikrotik Router Basic Configuration Using Winbox | August 24, 2015
MikroTik is one of the most popular routers. MikroTik Router has a lot of networking services that help to build a stable and smooth network so easily. It is said that any ISP Company or any Enterprise Office cannot go a single day without MikroTik Router. So, system administrators who are not using MikroTik Router yet, they will soon start using MikroTik Router, I think. As a system administrator, I am also using MikroTik Router about 5 years in my network [...]
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MikroTik User Manager RADIUS Installation on RouterOS 7 | July 5, 2022
The User Manager is a MikroTik provided RADIUS Server packages. It can be used to manage users for small or medium level business. User Manger is not a default RouterOS packages. So, we have to install user manager as an extra package in RouterOS 7. RouterOS 7 has brought a massive change on User Manager package. The most important change is managing User Manager from Winbox while in RouterOS 6 the User Manager package can only be managed from Web [...]
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How to Block NetShare Changing MikroTik TTL | April 19, 2024
Internet user can easily share their net connection to others using their smart phone or Laptop creating Hotspot. Smart phone users especially Android users by default get a net sharing app named Mobile Hotspot to share his net connection to others. Besides Mobile Hotspot, there are many Android Apps like NetShare those can be used to share net connection to others. Sharing net connection to others or friends is a good feature in Smart phone but sometimes users misuse this [...]
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MikroTik Site to Site GRE Tunnel Configuration with IPsec | March 26, 2018
VPN (Virtual Private Network) is a technology that provides a secure tunnel across a public network. A private network user can send and receive data to any remote private network using VPN Tunnel as if his/her network device was directly connected to that private network. MikroTik provides GRE (Generic Routing Encapsulation) tunnel that is used to create a site to site VPN tunnel. GRE tunneling protocol which can encapsulate a wide variety of protocols creating a virtual point-to-point link was [...]
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MikroTik Router Integration and Configuration on GNS3 | September 19, 2018
GNS3 is a network simulator software used by hundreds of thousands of network engineers worldwide to emulate, configure, test and troubleshoot virtual and real networks. GNS3 can talk a large number of network vendors including MikroTik. MikroTik introduces Cloud Hosted Router (a RouterOS version) that is used to run as virtual machine and a virtual machine can easily be integrated with GNS3. So, network administrators who are fond of MikroTik Router can now configure, test and troubleshoot their MikroTik network [...]
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Turn Computer into Wi-Fi Hotspot | September 17, 2015
Internet Connection Sharing is an awesome feature in windows operating system. Using this feature, you can turn your computer which has wireless network card integrated into Wi-Fi hotspot and share your internet connection with your friends or family members. Generally, each laptop has a wireless network card integrated by default. So, if you are a laptop user, you can turn your laptop into Wi-Fi hotspot so easily. If you are a Desktop user, you can also turn your desktop as [...]
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How to Customize MikroTik Hotspot Login Page | September 12, 2020
MikroTik Hotspot is an awesome service that can be customized according to any organization need. MikroTik Hotspot is able to authenticate and authorize network users so easily. Besides premium Hotspot service, it can also be used as a public Hotspot network. Although public network is a free network service, it can be a better source of income by serving ads. As no user can get internet access without visiting Hotspot login page, the login page is main space for serving [...]
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MikroTik Multiple SSID with Separate LAN and DHCP Server | October 30, 2019
One of the most amazing features of MikroTik Wireless Router is creating Multiple SSID (Virtual AP) on a physical wireless interface. So, creating a Guest WiFi AP with separate LAN block, SSID and DHCP Server is so easy using MikroTik WiFi AP Router. In the previous article, I discussed how to configure MikroTik WiFi Access Point on physical wireless interface with DHCP Server using hAP Lite (RB941-2nD) Wireless Router. In this article I will discuss how to configure a Virtual [...]
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