Tag: IP

In some ways, firewalld on systemd systems is easier to manage and configure than iptables. There are, for the most part, no long series of chains, jumps, accepts and denies that you need to memorize to get firewalld up and running in a basic configuration. The rules are simple and straightforward, but there is no reason you cannot still have all the power that iptables afforded.

What is nmcli?

nmcli stands for Network Management Command-Line Interface, and is a tool for managing the NetworkManager application and reporting on the status of the network. It can be utilized as a substitution for nm-applet or other similar graphical clients. nmcli is used to display, create, delete, edit, activate, deactivate network connections, and control and display network device status.

What is DNS?

The Domain Name Service (or DNS) is the key to the presence of your server on the internet. You are probably aware your domain has an “IP” address, which stands for Internet Protocol; that number is your domain’s literal web address on the internet. A typical IP address is a series of four numbers called octets that are identified like so: 10.10.10.10.  You can think of your IP address as being similar to a postal address. The IP address is the exact location where your domain lives. I usually explain it like this;

This 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.

As part of our Web Hosting Toolkit, our Liquid Web IP Checker makes it easier than ever to identify IT issues. IP addresses are the unique numbers assigned to every computer that connects to the Internet. When troubleshooting connectivity issues, checking your computer’s IP address is the first step in identifying possible network issues. Correctly identifying your public IP address allows you (and our Support technicians) to find information on the server and it’s log files to pinpoint possible issues between your computer and server.

If there is one truth in the world of web hosting, it is that we always need more information. Information about configurations, dedicated servers, VPS servers, connections, delivery speeds and networking is essential in troubleshooting and optimizing our web presence. While this kind of information can be gathered from various providers and sites across the Internet, Liquid Web has developed a one stop shop toolkit to gather some of the most vital troubleshooting tools in one convenient interface designed to make your life easier.

How Do I Get Back Into RDP?

You may be working from a local machine that has an IP that is not scoped on that RDP port, making it impossible for you to gain remote access to add the IP address to the RDP rule’s scope. Do not fret; there is a simple and quick way to add your IP to the RDP scoping (or any other entities such as MySQL or MSSQL) right through your Plesk interface in your local browser. You can watch this video, or scroll down for step-by-step directions.

The command line terminal, or shell on your Linux server, is a potent tool for deciphering activity on the server, performing operations, or making system changes. But with several thousand executable binaries installed by default, what tools are useful, and how should you use them safely?

Broken down into two parts our article's first section hits on “how to whitelist IPs or URIs," for people who are somewhat familiar with ModSecurity but want to know further about the process. Our second section examines why we configure ModSecurity and how to prevent the security of the server from getting in the way of our work. If you have a Fully Managed Liquid Web server reach out to our Heroic Support team for assistance with whitelisting!

How do IPv4 and IPv6 compare?

Both IPv4 and IPv6 addresses are used to identify a server's location and possibly identify other computers within a network. Assigned IP addresses allow those computers to find and communicate with other computers across a network.

The main difference between the IPv4 and IPv6 addresses is the number of available IP assignments each protocol can allow for or use. IPv4 provides 2³², or a combination of 4,294,967,296 IP addresses and IPv6 can have approximately 3.4×10³⁸ addresses which are a little more than 7.9×10²⁸ times as many as IPv4! (that's a lot of math!)