Email servers are now a must-have for small, medium, and large enterprises. They enable easy and efficient traffic control. Besides, having your email servers ensure that you can independently define or set your rules to meet your objectives. These advantages ensure that you manage your servers more efficiently and in a cleaner manner.
SMTP is your ideal protocol for email server management. Commonly known as Simple Mail Transfer Protocol, SMTP stands out as a standard internet communication protocol designed and used for electronic mail transmission. It routes emails by using third-party service providers to send emails through servers. This protocol comes in handy for companies or enterprises with large volumes of emails. Notably, SMTP has no downtimes, sends emails to your inbox rather than your spam folder, and has an analytics section on the dashboard. Thus, you do not need a lot of time and resources to manage your email servers.

https://green.cloud/docs/how-t....o-configure-smtp-ser

#linux #linuxvps #smtp #smtpserver #emailservers
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When it comes to large organizations, Users and Groups in Linux play an important role in helping keep systems secure and properly functioning.

There can be different levels of users in an organization with different roles and permissions. And you’ll need a good understanding of Linux permissions to manage and/or understand them.

To protect files and directories in Linux from access by certain types of users, we can use the chown and chgrp commands. These commands let you manage which type of user can read, write, and execute a file.

https://green.cloud/docs/how-t....o-use-the-chown-and-

#linux #linuxvps #chown #chgrp
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Currently, there are many free Control Panel providers with many features, helping to optimize the web server for high performance. In addition to the free Control Panels (HestiaCP, CentOS Web Panel, CyberPanel, aaPanel, FASTPANEL) we would like to introduce to you another Control that is CloudPanel.

CloudPanel is a new Control Panel with a simple, lightweight structure and is suitable for applications and websites using PHP source code. CloudPanel is developed by a team with more than ten years of experience from Magento providers. With a neat and beautifully refined GUI interface, it has given users an extremely smooth experience. In addition, CloudPanel is also trusted by major providers and integrated into their Templates.

https://green.cloud/docs/instr....uctions-for-installi

#linuxvps #debian #cloudpanel
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If it’s just working with files, then there’s not much to say. Currently, many graphic tools effectively support this. Simply with a few mouse clicks, drag, drag, select, and drop and then everything is done. But that’s when manipulating the graphical interface, all of which are intuitive and vivid, and everything is easy to see. With a Linux environment, especially with a server environment, usually, we will not have such a graphical interface. Most server systems must operate through the command line window, black screen, and white text. At that time, mouse operations were too expensive. We only have a screen, and a keyboard, working directly with the command line. For those who do not often work on the command line system, this is a nightmare, the commands are too hard to remember and too difficult to use.

https://green.cloud/docs/how-t....o-manipulate-files-u

#linux #linuxvps #command #commandline #manipulate
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iftop is a network analyzing tool used by system administrators to view bandwidth-related stats. It shows a quick overview of the networking activities on an interface. It stands for Interface TOP and the top is derived from the op command in Linux. It even acts as a diagnostic to diagnose which program is causing the problem to the network.

https://green.cloud/docs/iftop....-a-real-time-linux-n

#linux #linuxvps #network #iftop #interfacetop
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If you are a regular Linux user or a system administrator, you may require network setup on your system. Unlike desktop systems where you can use dynamic configurations, you will have to perform specific configurations on the servers depending on your network environment.

Dynamic configurations are constantly changing when the server is restarted, so in some cases, a static configuration is required, such as when the server needs to be administered remotely or when the server is running an application or service that requires constant access. So, in this video, we will explain how you can set up basic networking in a Ubuntu-based Linux operating system. The basic setup includes setting static IP, Gateway, DNS, and hostname.

https://green.cloud/docs/how-t....o-configure-the-netw

#linux #linuxvps #configurenetwork
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Composer is an application for tracking the dependencies of a project. It pulls in all the required PHP packages your project depends on and manages them for you.

Instead of replacing system package managers (like apt or yum), Composer allows you to specify a set of libraries for a specific project. With the libraries established, Composer then identifies the versions and dependencies and installs them to the corresponding project.

https://green.cloud/docs/insta....ll-composer-on-cento

#linuxvps #centos #composer #centos9
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Adding and removing users on a Linux system is one of the most important system administration tasks to familiarize yourself with. When you create a new system, you are often only given access to the root account by default.

While running as the root user gives you complete control over a system and its users, it is also dangerous and possibly destructive. For common system administration tasks, it’s a better idea to add an unprivileged user and carry out those tasks without root privileges. You can also create additional unprivileged accounts for any other users you may have on your system. Each user on a system should have their own separate account.

https://green.cloud/docs/how-t....o-add-remove-a-user-

#linux #linuxvps #adduser #removeuser
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UFW, or Uncomplicated Firewall, is a simplified firewall management interface that hides the complexity of lower-level packet filtering technologies such as iptables and nftables. If you’re looking to get started securing your network, and you’re not sure which tool to use, UFW may be the right choice for you.

https://green.cloud/docs/how-t....o-set-up-a-firewall-

#linuxvps #ubuntu #ufw #firewall
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KumbiaPHP is a simple and light PHP framework under the BSD license, that is, we can use it for our projects. Under the premise of shortening development times, KumbiaPHP is a framework with the characteristic of being “Zero Config”. In other words, after you unzip it, you can start working. It’s that simple.

https://green.cloud/docs/how-t....o-install-kumbiaphp-

#linuxvps #kumbiaphp #ubuntu
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While updating or installing new packages in the Ubuntu/Debian server we often experienced slow downloading speed even while our network connection was running fine. So when you run command # apt-get update, you see a slow download speed for packages. This just means you’re connected to a Source Mirror server that’s really busy. Some users complain that nothing happens or they are not getting any updates at all. Some have different issues like the update stuck in the header and doesn’t move or resolve any further.

Usually, slow speed on Ubuntu/Debian server update & upgrade is due to these several issues:

- Mirrors issue
- Name Servers issue
- Repositories issue
- Unknown issues

https://green.cloud/docs/how-t....o-fix-the-slow-apt-g

#linuxvps #apt #aptget #ubuntu #debian
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CyberPanel is a control panel designed with the main purpose of being user-friendly for non-technical users. CyberPanel is easy to learn because it uses a simple layout that most hosting companies are already familiar with. CyberPanel also has several features that most other control panels don’t have.

CyberPanel offers an advanced interface that can be used instead of using FTP or SSH to upload files via the command line from your computer. CyberPanel also provides a service script installer so you can easily install scripts such as WordPress and Joomla without having to research how each script needs to be installed individually through FTP/SSH.

CyberPanel has a fantastic feature called CSF Firewall which protects from brute force attacks, CyberPanel also allows you to manage the firewall through a dashboard along with many other management options CyberPanel offers a lot of different features that running your own control panel does not come with. CyberPanel also provides an API that can be used by hosting companies or developers for custom development projects. CyberPanel works on all major platforms such as Windows, Linux, BSD, FreeBSD, and Mac OS X.

https://green.cloud/docs/how-t....o-install-cyberpanel

#ubuntu #cyberpanel #ubuntu22 #linuxvps
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MariaDB is an open-source relational database management system (DBMS) that is a compatible drop-in replacement for the widely used MySQL database technology. MariaDB is based on SQL and supports ACID-style data processing with guaranteed atomicity, consistency, isolation, and durability for transactions.

https://green.cloud/docs/how-t....o-install-mariadb-on

#linuxvps #centos #mariadb #centos9
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GIT, a foundational tool in version control systems, allows developers to precisely track and manage software project modifications. Embracing Git on CentOS Stream streamlines code management and fosters collaboration, ensuring every change is accounted for. Its robust features, from precise branching to comprehensive revision tracking, position it as an indispensable asset for developers.

https://green.cloud/docs/how-t....o-install-git-on-cen

#linuxvps #centos #git #centos9
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Nextcloud is open source and a program for storing and synchronizing data on the cloud platform. With Nextcloud you can build for individuals or businesses data storage and synchronization platforms like Google Drive, Dropbox, and One Drive. Nextcloud uses Nextcloud’s open source code and builds a Data Storage and Sync service for individuals and businesses.

Nextcloud supports a lot of popular platforms – mobile platforms as well as desktops. It provides native apps for most operating systems, allowing you or your team to work from any device or location. That means, there are no infrastructure costs.

https://green.cloud/docs/how-t....o-install-nextcloud-

#linuxvps #cloudpanel #nextcloud
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When you order your VPS, you can choose a distribution or operating system to pre-install. The server is therefore ready to use after delivery but it will be up to you as the administrator to implement measures that ensure the security and stability of your system.

https://green.cloud/docs/secure-your-kvm-vps/

#linuxvps #kvmvps #centos
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FastPanel is currently one of the most popular server management software available today. It is similar to cPanel or DirectAdmin. However, it is very simple so it runs much faster than other server management software, and especially it is completely free.

Fastpanel has full features of hosting management software. Include:
- Domain management
- Filemanager
- Database management
- Backup
- Free Let’s Encrypt SSL certificate
- VPS tracking statistics,
- Emails
- FTP and SFTP
- Apache & Nginx
….

https://green.cloud/docs/how-t....o-install-fastpanel-

#linuxvps #ubuntu #fastpanel #cpanel #directadmin
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Ubuntu Server is a variant of the Ubuntu OS that does not include a graphical user interface (GUI) by default. GUI applications consume system resources needed for server-oriented tasks, so Linux server distributions usually avoid a GUI in favor of the command-line terminal.

Some tools, however, perform better and are easier to manage with a GUI. If you use a tool with a GUI, installing a desktop environment may improve the experience of working with the server.

https://green.cloud/docs/how-t....o-install-a-desktop-

#linuxvps #ubuntu #desktopenviroment #gui #ubuntu22 #ubuntuserver
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WireGuard is a modern VPN (Virtual Private Network) technology that utilizes state-of-the-art cryptography. Compared to other popular VPN solutions, such as IPsec and OpenVPN, WireGuard is faster, easier to configure, and has a smaller footprint. It is cross-platform and can run almost anywhere, including Linux, Windows, Android, and macOS.

Wireguard is a peer-to-peer VPN; it does not use the client-server model. Depending on its configuration, a peer can act as a traditional server or client. It works by creating a network interface on each peer device that acts as a tunnel. Peers authenticate each other by exchanging and validating public keys, mimicking the SSH model. Public keys are mapped with a list of IP addresses that are allowed in the tunnel. The VPN traffic is encapsulated in UDP.

https://green.cloud/docs/how-t....o-install-and-config

#ubuntu #wireguard #vpn #ubuntu22 #linuxvps
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Enabling an SSH server on a virtual private server (VPS) will expose the server to the Internet and provide opportunities for hacking activities, especially when VPS still using root as primary access.

VPS should be configured with an email alert automatically to each successful login attempt via the SSH server. VPS server owner shall be notified of any SSH server access log, such as who, when, and which source IP address. This is an important security concern for server owners to protect the server from unknown login attempts. This is because if hackers use brute force to log into your VPS via ssh then it can be very dangerous.

https://green.cloud/docs/how-t....o-get-email-alerts-f

#linux #linuxvps #linuxserver #sshlogin #emailalert
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