Knowledge Base
427 articles and guides on knowledge base from the NexonHost team — page 18 of 18.
How to Install a Let’s Encrypt Certificate on your Ubuntu 18.04 Dedicated Server or VPS
How to Install a Let’s Encrypt Certificate on your Ubuntu 18.04 Dedicated Server or VPS Installing a Let’s Encrypt TLS/SSL (Transport Layer Security or Secure Sockets Layer) certificate is one of the most important steps in securing your Ubuntu 18.04 server. This is a plus to your website if you…
Read article →How To Use Journalctl to View and Manipulate Systemd Logs
How To Use Journalctl to View and Manipulate Systemd Logs Some of the most compelling advantages of systemd are those involved with process and system logging. When using other tools, logs are usually dispersed throughout the system, handled by different daemons and processes, and can be fairly…
Read article →How to install Qemu guest agent for CentOS
How to install Qemu guest agent for CentOS In this article, we will help you to install the Qemu guest agent on your virtual private server. This agent is a helper daemon that exchanges information between the quest and the host and executes commands in the guest for snapshot or backup. The guest…
Read article →How to perform and read a traceroute on Linux and Windows
How to perform and read a traceroute on Linux and Windows To run traceroute on a Linux system, do the following: Open up an instance of Terminal. Type in the phrase “traceroute [hostname]” and press enter. On a Windows system, you can: Go to the Start menu. Select Run. Type in “cmd” and then…
Read article →How do I make a RAID array inside Windows?
How do I make a RAID array inside Windows? Log in to your server Log in to your server by KVM or RDP (remote desktop). Log in to your control panel Open up your control panel, and change “View by” to either “small icons” or “large icons”. Execute actions Click on “Administrative Tools” and then…
Read article →How to install R1Soft Client
How to install R1Soft Client R1Soft Continuous Data Protection Continuous Data Protection (CDP) is a cost-effective solution to traditional, incremental backups. This process starts in the same way as a traditional backup, a full snapshot will be made of all your data. After the first initial…
Read article →How to install and use MTR on Windows and Mac OS X
How to install and use MTR on Windows and Mac OS X Install and use MTR on Windows Download WinMTR (Windows) (Windows) Run WinMtr.exe Insert an IP address or a domain name in the Host field and click on “Start”; the result will be the following: Install and use MTR on Mac OS X You…
Read article →Performing Network Diagnostics with MTR
Performing Network Diagnostics with MTR Today, we’re looking at how to diagnose network issues. We’ll use a specialized tool called MTR, which is basically a combination of two common network tools: ping, and traceroute. MTR lets you identify if and how a breakdown occurs between your server and a…
Read article →HTTP response status codes
HTTP response status codes HTTP response status codes indicate whether a specific HTTP request has been successfully completed. Information responses 100 Continue This interim response indicates that the client should continue the request or ignore the response if the request is already finished.
Read article →How To Install Nginx on Ubuntu 18
How To Install Nginx on Ubuntu 18 Installing Nginx Since Nginx is available in Ubuntu’s default repositories, it is possible to install it from these repositories using the apt packaging system. sudo apt install nginx After accepting the procedure, apt will install Nginx and any required…
Read article →How to Configure Static IP Address on Ubuntu 18
How to Configure Static IP Address on Ubuntu 18 The newer versions of Ubuntu uses ‘Predictable Network Interface Names’ that, by default, start with en[letter][number]. The first step is to identify the name of the ethernet interface you want to configure. To do so use the ip link command, as…
Read article →How to Test Network Throughput with iPerf on Debian and Ubuntu
How to Test Network Throughput with iPerf on Debian and Ubuntu Install iPerf The iperf package is included in most Linux distribution’s repositories. Debian and Ubuntu apt-get install iperf How to Use iPerf iPerf must be installed on the computers at both ends of the connection you’re testing.
Read article →Started Service enabling compressing RAM with zRam – CentOS/RHEL 7 Installation hung
Started Service enabling compressing RAM with zRam – CentOS/RHEL 7 Installation hung When installing CentOS/RHEL 7 on a hardware box with huge amount of ram installed, the installation gets hung at: [ OK ] Started Anaconda NetworkManager configuration. Starting Anaconda NetworkManager configuration…
Read article →How to add a second IP address, permanent or temporary in Linux
How to add a second IP address, permanent or temporary in Linux Add a second temporary IP address Using ifconfig If you want to add a secondary IP address to a NIC already in use in Linux, and have that change only temporary. Enter this command: ifconfig [nic]:0 [IP-Address] netmask [mask] up An…
Read article →Using ipset to block IP addresses – firewall
Using ipset to block IP addresses – firewall ipset is an excellent tool that can be used to efficiently block a list of IP addresses at the firewall level (it uses iptables). It really helps in easily adding IP addresses and maintaining IP address blocklists. The below guide sets up ipset to…
Read article →How to Whitelist/Allow an IP address on CentOS, Redhat, Fedora Linux Server
How to Whitelist/Allow an IP address on CentOS, Redhat, Fedora Linux Server Steps to Allow incoming and outgoing connection in IPtables Firewall is given below. How to Whitelist/Allow Incoming connection from an IP address Login into your Linux server via SSH as ‘root’ user Run the command…
Read article →How to use iptables
How to use iptables The user-space application program iptables allows configuring the tables provided by the Linux kernel firewall, as well as the chains and rules it stores. The kernel module currently used for iptables only applies to IPv4 traffic, to configure firewall rules for IPv6…
Read article →How to install java on CentOs.
How To Install Java On CentOs. First update all packages. Use these command: 2. Install OpenJDK package with these comand: 3. Install OpenJDK-devel package: 4. Check if the package is installed properly through rpm tool: 5. Now check the java version: This is how to install Java in five steps.
Read article →How To Use grep Command In Linux
How To Use Grep Command In Linux Grep is an essential Linux and Unix command. It is used to search text and strings in a given file. In other words, grep command searches the given file for lines containing a match to the given strings or words. The syntax is as follows: grep ‘word’ filename…
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