Reading Time: 2 minutes
SNMP, or Simple Network Management Protocol, is widely used to communicate with and monitor network devices, servers, and more, all via IP. In the previous article, we installed an SNMP agent on a CentOS 6.5 server. This agent allows for the collection of data from our server and makes the information available to a remote SNMP manager. To add a little security, we’ll now change the port that SNMP listens on.
Continue reading “How To Change the SNMP Port on CentOS”
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In this article we will learn what the Network Time protocol (NTP) is and how to install it on the two Linux distributions most commonly used on Liquid Web’s servers. We will be focusing on using CentOS 7 and Ubuntu 18.04 servers, but the process is largely the same on other recent versions of each. Before we start, make sure we are familiar with using SSH (Secure Shell) as we’ll need it to connect to the server. Here’s a link to one of our articles on the basics of SSH if you are unfamiliar with its usage.
Continue reading “How to Install and Configuring NTP on CentOS and Ubuntu”
Reading Time: 5 minutesThis guide will walk you through the steps for setting up a firewall using iptables in an Ubuntu VPS server. We’ll show you some common commands for manipulating the firewall, and teach you how to create your own rules.
Continue reading “How to Set Up A Firewall Using Iptables on Ubuntu 16.04”
Reading Time: 6 minutesA Squid Proxy Server is a feature rich web server application that provides both reverse proxy services and caching options for websites. This provides a noticeable speedup of sites and allows for reduced load times when being utilized.
Squids reverse proxy is a service that sits between the Internet and the webserver (usually within a private network) that redirects inbound client requests to a server where data is stored for easier retrieval. If the caching server (proxy) does not have the cached data, it then forwards the request on to the webserver where the data is actually stored. This type of caching allows for the collection of data and reproducing the original data values stored in a different location to provide for easier access.
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What is Webmin?
Webmin is a browser-based graphical interface to help you administrate your Linux server. Much like cPanel or Plesk, Webmin allows you to set up and manage accounts, Apache, DNS zones, users and configurations. As these configurations can get somewhat complicated Webmin works to simplify this process. The result is fewer issues during server and domain setup. Which results in a stable server and a pleasant administration experience. Unlike Plesk or cPanel, Webmin is completely free and open to the public. Unfortunately, here at Liquid Web, we do not offer managed support for Webmin, but we are always willing to assist as much as possible when issues arise. You can download Webmin from their site. Also, you can find some excellent documentation on this interface.
Continue reading “How To Set Up Multiple PHP Versions in Webmin”
Reading Time: 4 minutesRemote Desktop Protocol (RDP) is the easiest and most common method for managing a Windows server. Included in all versions of Windows server and has a built-in client on all Windows desktops. There are also free applications available for Macintosh and Linux based desktops. Unfortunately, because it is so widely used, RDP is also the target of a large number of brute force attacks on the server. Malicious users will use compromised computers to attempt to connect to your server using RDP. Even if the attack is unsuccessful in guessing your administrator password, just the flood of attempted connections can cause instability and other performance issues on your server. Fortunately, there are some approaches you can use to minimize your exposure to these types of attacks. Continue reading “Improving Security for your Remote Desktop Connection”
Reading Time: 2 minutesNginx is an open source Linux web server that accelerates content while utilizing low resources. Known for its performance and stability Nginx has many other uses such as load balancing, reverse proxy, mail proxy, and HTTP cache. With all these qualities it makes a definite competitor for Apache. To install Nginx follow our straightforward tutorial. Continue reading “Install Nginx on Ubuntu 16.04”
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SNMP, or Simple Network Management Protocol, is widely used to communicate with and monitor network devices, dedicated servers, and more, all via IP. In this case, we’ll be installing an SNMP agent on a CentOS VPS server, which will allow for collection of data from our server, and make the information available to a remote SNMP manager.
- These instructions are intended for installing SNMP and doing a very basic configuration.
- I’ll be working from a Liquid Web Core Managed CentOS 6.5 server, and I’ll be logged in as root.
Continue reading “How To Install and Configure SNMP on CentOS”