Build an openDNS recursive resolver DNS using Bind Rumi, December 18, 2021August 9, 2023 It’s a small thing, but someone might feel it to be useful of running a public DNS like google has 8.8.8.8. You actually can build a recursive DNS and serve to the world (instead to your network user only! 🙂 ) Install Bind apt install bind9 bind9utils -y It’s pretty simple, all you need is the have your bind package installed and some very basic configurations like below- nano /etc/bind/named.conf include "/etc/bind/named.conf.options"; include "/etc/bind/named.conf.local"; include "/etc/bind/named.conf.default-zones"; nano /etc/bind/named.conf.options options { directory "/var/cache/bind"; dnssec-validation auto; auth-nxdomain no; # conform to RFC1035 listen-on-v6 { any; }; allow-query { any; }; allow-recursion { any; }; allow-query-cache { any; }; // additional-from-cache { any }; rate-limit { responses-per-second 500; }; }; Keep the other 2 configuration files as it is. Restart bind/named services. Point your laptop Ethernet DNS1 configuration with the server IP, if everything’s a’right, you should be able to browse sites. If you don’t- check if any firewall or rule is blocking port 53 both TCP and UDP are open. Now let’s Test: You can open up a browser and go to http://myresolver.info and it will output your public IP address and what DNS recursive resolver you seem to be using. Related Administrations Configurations (Linux) BindDNSNamedPublic DNSRecursvive
Install LAMP with PHP 7.4 on FastCGI/CGI configuration on CentOS 7 March 24, 2021 Step 1 – Setup Yum Repository In the first step install all the required yum repositories in your system used in the remaining tutorial for various installations. You are adding REMI, EPEL, Webtatic & MySQL community server repositories in your system. CentOS / RHEL 7 yum install epel-release rpm -Uvh… Read More
Monitor Windows Service using Nagios (Icinga) December 8, 2011 On the Nagios Server edit the file /usr/local/nagios/etc/objects/windows.cfg: # vi /usr/local/nagios/etc/objects/windows.cfg Add the following to create a new service definition to monitor the process state of WinVNC.exe (VNC Server): # Create a service for monitoring the WinVNC.exe process # Change the host_name to match the name of the host you… Read More
Install OnlyOffice Document Server on Ubuntu 16 November 21, 2020 Step 1: Install ONLYOFFICE Document Server Please note that OnlyOffice document server requires at least 2GB of RAM. An additional 2GB of swap space is recommended. OnlyOffice document server depends on PostgreSQL, Node.js, Redis Server, RabbitMQ server and Nginx. The following steps are tested on a Ubuntu 16.04 server but should… Read More