Category Archives: Homeschool

Homeschool

Generating Access Hash To Exchange DNS Records On Your Dedicated Server

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Access Hash also known as Remote Access Key is used while configuring DNS that can exchange records between servers. this key is also used on automatic account creation scripts and running external software etc.

This lesson guides you on how you can generate a remote access key in your VPS or Dedicated Server.

To start, simply login to your SANGKRIT.net account and follow these steps:

  1. Visit your ‘My Products’ page
  2. Click ‘Servers’
  3. Next to your server, click ‘Manage’
  4. Visit WHM and search remote access key on the left-side menu
  5. Click Generate New Key
  6. The key will be generated

Now you can copy and paste the new access key to the applicable file or place it on the remote server(s) that require to transmit with your web server.

The Access Key Signature includes the first 32 characters of the remote access key, separated by colons (:). This signature can be used for quickly checking whether you used the correct access key on interfaces that display the key in a shortened format.

Homeschool

Why Do Real Estate Builders & Agents Must Start A Website?

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Maintaining your real estate website is a long-term investment that certainly puts you ahead of your competition.

Many real estate persons invest a lot of money in business promotion and this narrows their return on investment. Having a website and blogging every day about your business is going to bring new prospects and will work as a great marketing tool.

Any real estate person can easily start his website at Sangkrit.net by registering his domain name and subscribing to Managed WordPress, hosting, or server.

Domains For Real Estate

You can start your website on more specific domain names like:

  1. .BUILDERS
  2. .REALESTATE
  3. .APARTMENTS
  4. .CONSTRUCTIONS

These domain names can be registered at Sangkrit.net.

Why Register Your Domain Name At Sangkrit.net?

Sangkrit.net is a globally trusted system that provides you with everything (to startup and grow online) in one place. You can register your domain, start your website, and start managing it yourself or hire a team of experts per hour per terminal basis.

Domains are the newest kind of private property. You are provided with complete control over your domain name. You can lock your domain name which prevents accidental or intentional transfers of domain ownership and stops anyone from redirecting your nameservers.

Domain Name Is Registered What’s Next?

Once the domain name is registered simply subscribe to Managed WordPress or you may also go for a higher level of web hosting such as Business Hosting & Servers.

After you have your domain name and WordPress. Simply log in to it to start your website. Don’t worry, the automated system of Sangkrit will guide you at each step of connecting your domain name to WordPress or any website you like to start.

The WordPress Hosting delivers automatic setup, backups, and software updates paired with 24/7 online support. Anyone can get started in a few clicks.

Growing Your Real Estate Business

As a real estate person, you don’t just need buyers and sellers. If you are a builder you will also need financial support from other investors. Here, your website will become a very good medium for attracting not only customers but investors. It depends on how your blog and whom you target with your posts. The rest is done by search engines.

Building Unbreakable Relationships With Your Clients

Your website will always be available to your customers. You can place testimonials of happy customers and encourage your clients to subscribe to your website, this you can do by making your website the first and only platform for doing business with you. You can create conditional forms allowing your customers to let you know what sort of properties they are looking for etc.

Your Prospects Are Searching For You Online

Today, every person looking up for anything is going to search for his requirements online. Even before sealing a deal with you chances are your client is going to search for your business online.

Hence, it is mandatory for you to bring your business online. And now it has become very easy and secure with Sangkrit.net because you are not only offered the cloud infrastructure but the programming support from the masters of code.

By having a website you can build an active online presence of your real estate services on the internet. You can not only showcase your past deals, future projects, and happy clients but also start networking through your blog.

Your posts will help your clients see what you are offering and how you want to connect with them and of course whenever you will plan online advertising, your website will work as a destination for your prospects otherwise where people will reach you after clicking your promotional emails or links. Do you want them to land on some other website or do you want to keep them always in your connection?

Homeschool

Building Your Online Store On .SHOP Domain Name

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.Shop is a generaic top level domain name that anyone can register to build his store online, it is well suitable for shop owners and people who want to sell online.

You can easily register it at Sangkrit.net with WordPress Ecommerce to build your online store yourself. With these two products you don’t need anybody or anything else except some time to setup your ecommerce store.

The WordPress Ecommerce at Sangkrit.net saves you from all hassles of installation and setup, you can directly login to dashboard and start managing your website.

How To Register .SHOP Domain Name With WordPress Ecommerce?

  1. Visit http://system.sangkrit.net
  2. Type the name you wish to register with .shop extension
  3. Click the select button next to the domain you wish to register
  4. Visit WordPress Ecommerce page
  5. Select WordPress Ecommerce plan
  6. Click Proceed to Cart button
  7. Checkout

Upon successful checkout, your products will be visible on your Sangkrit.net account’s products page. There you click the ‘Manage’ button next to Managed WordPress and it will let you connect your domain name with WordPress and login to your ecommerce website.

Homeschool

Register Your Business As Unique Domain Name

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Sangkrit.net lets you find a domain name that suits best to your business. Having your own unique domain name makes you appear more legitimate to your prospects and Sangkrit.net not only helps you in registering a perfect domain name but also enables you to build your business website, and set up a business email over it.

You must keep your domain name unique, short, and memorable. If you already own a business and it has a long name then don’t try putting the full name in your domain, instead, go for something that can be easily recalled and typed by people.

Sangkrit.net enables you to opt for many-many new TLDs than just .com and .net, etc. There has been a lot of new bringing in the number of new domain extensions such as:

There are many more profession and industry-specific domain names now available for you to register and with hundreds of new domain extensions to pick from, you can easily register the one that better describes your business to its core audience.

Sangkrit.net offers you total control over the DNS i.e you can manage your domain nameserver (DNS) records and set your email, FTP, sub-domains, wild card, and website location all from a control panel.

System Engineering

Configuring One Server To Handle HTTP & HTTPS Respectively

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On an Nginx server, it is possible for you to configure it to manage both HTTP and HTTPS requests.

You should also know that prior to 0.7.14, it was not possible to enable SSL certificate selectively over individual listening sockets, as we have done here in the following given code:

server {
    listen              80;
    listen              443 ssl;
    server_name         www.yoursite.com;
    ssl_certificate     www.yoursite.com.crt;
    ssl_certificate_key www.yoursite.com.key;
    ...
}

Before SSL could only be enabled over the entire server using an SSL directive, thus it was impossible to put up a single HTTP/HTTPS server. Afterward, the SSL parameter of the listen directive was added to resolve this problem.

The use of the SSL directive in newer versions has been discouraged.

System Engineering

When Multiple HTTPS Servers Listen On A Single IP Address

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In SSL protocol conduct, a typical problem occurs when two or more configured HTTPS servers listen on a single IP address.

server {
    listen          443 ssl;
    server_name     www.yoursite.com;
    ssl_certificate www.yoursite.com.crt;
    ...
}

server {
    listen          443 ssl;
    server_name     www.yoursite.org;
    ssl_certificate www.yoursite.org.crt;
    ...
}

As shown above, what exactly happens here is that the client browser starts to receive the default server’s certificate (www.yoursite.com) regardless of the name of the server requested.

This is pushed by SSL protocol conduct. Here, the connection via SSL is made before the browser sends another HTTP request and Nginx does not know the server name requested. Hence, it may only offer the default server’s certificate.

Here’s the solution:

server {
    listen          192.168.1.1:443 ssl;
    server_name     www.yoursite.com;
    ssl_certificate www.yoursite.com.crt;
    ...
}

server {
    listen          192.168.1.2:443 ssl;
    server_name     www.yoursite.org;
    ssl_certificate www.yoursite.org.crt;
    ...
}

Above given is the ancientest and most powerful way used for resolving this issue. Here a separate IP address is assigned for each HTTPS server.

System Engineering

Updating Nginx Server Configuration To Use The SSL You Have Purchased

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You need to update the config file on your server to use the SSL certificate you are subscribed to. This can be done by accessing the command line SSH and opening the Nginx config file for the domain you are installing the SSL certificate.

Simply run the following command: 

sudo vim /etc/nginx/sites-available/yourwebsite.com

Now update the config file to use the SSL certificate:

server {
        listen 80;
        server_name yourwebsite.com;
        return 301 https://$host$request_uri;
}

server {
    listen 443 ssl;

    server_name yourwebsite.com;
    ssl_certificate     /etc/nginx/ssl/yourwebsite.crt;
    ssl_certificate_key /etc/nginx/ssl/yourwebsite.key;

    root /usr/share/nginx/yourwebsite.com/;
    index index.php  index.html index.htm;

}

The next step is to save the file using this command:

wq!

And then restart your Nginx server with this command:

sudo service nginx restart

That’s it.

System Engineering

Configuring SSL & Intermediate Certificates On Nginx Server

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In the previous lesson, you learned about installing and configuring Nginx on your dedicated server. Now this lesson is on installing SSL and other standard certificates.

The first thing you need to do is get an SSL certificate from Sangkrit.net, once you subscribe to it and your certificate request is approved just download it to install those files on your dedicated server.

To download and install your certificate files follow these steps:

  1. Visit your Sangkrit.net product page
  2. Select SSL Certificates
  3. Select Manage next to the certificate you need to download
  4. Select a Server type
  5. Click the Download Zip File option
  6. Your certificate would start downloading now.
  7. Copy the SSL certificate file and the certificate bundle file to the Nginx server
  8. You already have a key file on the server which you got when you generated your certificate request.
  9. Now edit your Nginx configuration to reference these files

Your certificate is installed now. Remember, the actual configuration file you edit depends on your version of Nginx, your OS platform, or the method you are using to install Nginx.

System Engineering

Installing & Configuring Nginx On Your Dedicated Server

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Nginx is a web server that is also used as a reverse proxy option. It also balances the load on your dedicated server and acts as a mail proxy as well as an HTTP cache. It is software used for high performance on your server.

This lesson will guide you in installing and configuring Nginx and for that, you are going to need the root privileges. You will also require to set up your CentOS server to use the EPEL Repository which stands for Extra Packages for Enterprise Linux.

To install EPEL simply run this command:

sudo yum install epel-release

You can read more about its configuration steps here. Earlier we installed yum as a package manager but it does not include any new version of Nginx in its default repository so installing EPEL will make sure that Nginx on CentOS remains up to date.

You are ready to install Nginx

Now you are ready to install Nginx on your server, simply run the following command:

sudo yum install nginx

Next, start Nginx:

Nginx doesn’t start on its own, so you will need to run a command for starting Nginx on your server:

sudo /etc/init.d/nginx start

To make sure Nginx is properly installed on your server, just direct your browser to your server’s IP address. If you see the words, “Welcome to Nginx”, it means you have Nginx installed and working.

System Engineering

Executing Sofware Packages On Your Dedicated Server With YUM

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The package management or software installations on your CentOS-based Linux server can be performed in two different ways, the first is via using a graphical user interface while the other is via command line terminal. The GUI is ok but YUM is a lot more powerful tool globally used by most system administrators.

YUM is one tool made available a long way for managing packages on CentOS Linux systems. One advantage of YUM is it not only keeps track of outdated packages but also monitors outdated dependencies on your server.

Running yum check-update

By running yum check-update command on your server you can check packages that can update candidates. If you have subscribed to a new dedicated server, running this command is going to install the updated candidates on your system.

Installing updated candidates with yum update

Another command called yum update will install all updated candidates on your system, this might take some time to complete depending upon the size of the installation and the speed of your server.

Now you are ready to install software packages

Once these things are done, you are ready to install any software from a central repository with YUM.

Similarly, the list all command of YUM will list all currently available packages, the list installed command shows the packages which are installed using YUM, and the install command is used for installing any package, whereas remove command first removes and then installs a package.

There are many more commands that you will learn about while working on your server. The man yum command is going to provide you with the help file showing all important information.

System Engineering

Installing & Configuring Apache On Your Dedicated Server

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Before installing PHP or MySQL, the first thing you need to do is install Apache on your dedicated server. In order to do that you simply need to access the command line of your server and log in as the root user:

  1. Connect your server via SSH
  2. Run this command: sudo su –
  3. Enter your server password

You now have root access.

Once you have that, you can install Apache using the ‘Yum‘ command:

[root@admin]# yum install httpd
Loaded plugins: fastestmirror, langpacks
base
| 3.6 kB 00:00:00
extras
| 3.4 kB 00:00:00
updates
| 3.4 kB 00:00:00
extras/7/x86_64/primary_d
| 121 kB 00:00:00
Loading mirror speeds from cached hostfile
* base: mirror.sigmanet.com
* extras: linux.mirrors.es.net
* updates: mirror.eboundhost.com
Resolving Dependencies
--> Running transaction check
---> Package httpd.x86_64 0:2.4.6-45.el7.centos will be installed
--> Processing Dependency: httpd-tools = 2.4.6-45.el7.centos for package:
httpd-2.4.6-45.el7.centos.x86_64
--> Processing Dependency: /etc/mime.types for package: httpd-2.4.645.el7.centos.x86_64
--> Running transaction check
---> Package httpd-tools.x86_64 0:2.4.6-45.el7.centos will be installed
---> Package mailcap.noarch 0:2.1.41-2.el7 will be installed
--> Finished Dependency Resolution
Installed:
httpd.x86_64 0:2.4.6-45.el7.centos

Dependency Installed:
httpd-tools.x86_64 0:2.4.6-45.el7.centos
mailcap.noarch 0:2.1.41-2.el7

Complete!
[root@admin]#

Once Apache is installed, the next thing you need to do is configure it and then make sure it works on your server, use the following command:

[root@admin]# systemctl start httpd && systemctl enable httpd

To make sure the Apache services are running on your server:

[root@admin] sudo systemctl status httpd

This will show you an active status if the service is running on your dedicated server.

System Engineering

Verifying The Presence Of Required PHP Libraries On Your Dedicated Server

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In the previous lesson, you have learned about getting yourself to know whether the Memcached service on your server is installed and listening to Port 11211.

Now this lesson is on checking the presence of the required PHP libraries needed to make Memcached work for you.

You can verify the installation from SSH. Another important thing is to make sure to use the same version of PHP as the website you want to use Memcached on.

On a dedicated server having WHM/cPanel with PHP version 7.3, the following command is used with the output as shown:

[root@server[~]: ea-php73 -i | grep "memcached" /opt/cpanel/ea-php73/root/etc/php.d/memcached.ini,
memcached
memcached support => enabled

Verifying Memcached service & PHP libraries are working

From the command line, telnet to the Memcached service.

[root@server ~]# telnet localhost 11211

This output will be returned, and you will be connected to the Memcached service.

Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.

Enter the command stats. A full page of output will appear, but towards the middle, look for the lines STAT bytes_read and STAT bytes_written.

stats
STAT pid 6374
STAT uptime 37567
...
...
STAT bytes_read 3733268975
STAT bytes_written 6526192728
STAT limit_maxbytes 1073741824
...
...
END

When you see a big amount of data is read and written, that means Memcached is working.

Entering the command stats again is going to show changes to these values.

And when you are seeing a very tiny amount of data read and written, or the values of 0, that means Memcached is not functioning good.

stats
STAT pid 30601
STAT uptime 603941
...
...
STAT bytes_read 7
STAT bytes_written 0
STAT limit_maxbytes 1073741824
...
...
END

Use quit to return to a standard prompt.

quit
Connection closed by foreign host.
[root@server ~]#

So that is how you can know that the caching is working as expected.

Homeschool, System Engineering

Know Whether Your Server’s Memcached Service Is Listening On Port 11211

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If you’re not sure whether your dedicated server‘s Memcached service is listening on port 11211 i.e. it is installed and running properly, there are some easy tests you can do to make sure everything is operating fine.

Before you start, enable the administrator access on your server (in case you have not), connect via SSH then switch to the root user.

Next, in the command line, type the following command and PRESS ENTER:

telnet localhost 11211

This will report to you back that it was able to connect to the service.

[root@server[~]: telnet localhost 11211
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.

In case, if it’s not installed properly, you will see something like this:

[root@transfer[~]: telnet localhost 11211
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused

And you will not be able to connect to the service.

In the next lesson, you will learn about testing the presence of the needed PHP libraries to make Memcached work for you.

System Engineering

Configured Memcached PHP Libraries On Your Server, Next What?

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In the previous lessons, you have learned about installing Memcached PHP Libraries and configuring Memcached Daemon on your dedicated server. Now next steps are to configure your apps and websites to use them so that you can get their real benefit.

So once you get the Memcached Daemon and PHP libraries installed on your CentOS-based dedicated server, you are required to configure your PHP application to use Memcached. In case you don’t it, Memcached is going to use your server resources without providing you any of the advantages.

Before starting, the system recommends you take a backup of your websites and then follow the changes outlined below.

WordPress users can take its benefit simply by using a plugin called W3 Total Cache Plugin. Yes, there are many other plugins as well but the system finds it best for most of its users. If in case this plugin doesn’t suit you or it is in conflict with some other plugin you are using, it that’s your case then you can choose some other plugin such as Batcache, Cachify, Memcached-Redux, etc.

In this lesson, you will learn about configuring the first and the best one i.e. W3 Total Cache. Simply start by installing-activating the plugin and then to configure, navigate to the Performance -> General Settings page.

Next, make sure the Enable tickbox is checked and Memcached is selected with the cache method for:

  • Page Cache
  • Object Cache
  • Database Cache
  • Fragment Cache

Once you do this, your website starts to use the Memcached services for imporving the performace of your website at the same time reducing the load on your dedicated server.

System Engineering

How Memcached Daemon Works On Your Dedicated Server?

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The loading of files and code on your dedicated server take lots of its resources, this resource usage can be reduced by using an object caching system and when you do that, the performance of your server automatically increases. This happens because then your server needs fewer resources to run web applications.

Memcached is a free high-performance, distributed memory object caching system which is generic in nature. It is planned for speeding up dynamic web applications simply by alleviating your database load.

Earlier you learned about configuring the Memcached PHP Libraries on your dedicated server. Now this lesson will let you know what is Memcached and how you can easily install it on your CentOS-based dedicated server at Sangkrit.net.

On CentOS servers, installation of the Memcached daemon is performed via command line and it is freed of any control panel you may be using such as WHM or cPanel, etc.

How this all works for you?

The cache data is simply stored in the hardware units such as RAM and that can also be used in correlation with a software segment.

As we have explained before, the primary purpose of cache is to increase the retrival of information stored in the form of data by minimizing the requirment to access the lower layers of storage every time a new request is made by the client.

Yes, this data is not the actual data stored on your server but it is a subset of data copied from the databases having the real data fed by your application.

This is like when you keep actual notes in your diary or anywhere else but you remember those notes anyway in your mind. So when the time comes when you need those notes; Instead of opening your diary again and finding them you directly make use of them because you already remember them anyway.

Hence, the main advantage of caching is to speed up loading and minimize the system resource usage that is generally needed to load any request such as a web page of your website or application.

System Engineering

Configuring Memcached PHP Libraries On Your Dedicated Server

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The dedicated servers at SANGKRIT.net offer you the option to configure your object caching system in the way that suits you best.

The lesson will guide you on how and why configuring Memcached PHP Libraries on your Linux-based dedicated server benefits you.

Memcached is one free object caching system that can be installed on your server for improving the performance of your website. It only works when you install the daemon, install the PHP libraries and configure your PHP application correctly.

You can easily do all that by following these steps:

  1. Login to your SANGKRIT.net account
  2. Visit your My Products page
  3. Click the Servers option
  4. Click Manage
  5. Open WHM

Next, on the WHM panel follow these steps:

  1. From the Software section on the left, select EasyApache 4
  2. Click the Customize button present in the Currently Installed Packages section.
  3. Click PHP Libraries on the left
  4. Type Memcached in the search box
  5. Click the button to install Memcached on the desired versions of PHP
  6. Click the Review button on the left,
  7. Click the Provision button at the bottom of the page

The installation should be complete now.

Apart from this, you should also know that the same modules can also be installed with yum in SSH. But be very conscious about the naming convention i.e. ea-php72-php-memcached. It must be installed on each version of PHP.

The next coming lesson will help you in the process of installing and managing the Memcached Daemon.

System Engineering

How To Quickly Setup Your New CentOS Server At Sangkrit.net?

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The new dedicated servers at Sangkrit.net offers you CentOS system that is highly customizable offering you easy to use command panels making it manageable for you to perform important tasks for yourself or your clients.

When you look forward to creating a new CentOS Server space, you need to perform several steps to end up getting a configured server with a working network protocol and SSH access.

This lesson will guide you through the steps for further server setup of CentOS after you purchase a Dedicated Server plan at Sangkrit.net

First of all, setup SSH as explained in this lesson here, then login with your personal account using this command –

ssh root@server-ip

In the above line, type the IP address of your server replacing the ‘server-ip’ text. When you select an SSH key for authentication, the command looks something like this:

ssh root@server-ip -i path/to/ssh/key

Next, upgrade the server package using this command:

dnf update

Once the process is complete, you will need to clean the cache and clear up the disk space by using this command:

dnf clean all

The initial setup of your server is now complete. Next, learn to host your domain name on your server.

System Engineering

Configure Linux Server For The EPEL Repository

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In order to have access to some important traffic monitoring controls, you will need to set up your CentOS system to use the EPEL Repository i.e. Extra Packages for Enterprise Linux.

However, this repository is not officially strengthened or endorsed by CentOS. Instead, it is supported by a bunch of Fedora Core enlistees to handle the packages which are normally used by Enterprise Linux professionals, especially the packages that are not included in either CentOS, Fedora Core, or Red Hat Linux Enterprise.

Possible conflicts on CentOS

Hence, sometimes there might be some chances for this repository to bring some conflicts on a server having common dependencies. To overcome such a situation, before deploying it you must test it on a non-production Linux system running the same servers as the production.

Advantages of EPEL Repository

The biggest benefit of operating the EPEL Repository over any other repository with CentOS is that the binaries are never impaired.

Installation & Configuration

Anyone can easily install it via YUM.

[root@user]# yum -y install epel-release

Once installation completes, you will need to update it

[root@user]# yum repolist

At this juncture, the EPEL Repository becomes ready to use.

Homeschool

America Is Out To Make CPC’s Insistence On One China Policy Backfire Democracy Into The Mainland

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In a press briefing on Sunday the 1st of August 2022 at the White House, the National Security Council Coordinator for Strategic Communications John Kirby said, “The world has seen the United States government be very clear that nothing has changed — nothing has changed — about our One China policy, which is of course guided by the Taiwan Relations Act, the Three Joint U.S.-PRC Communiqués, and the Six Assurances.”  

On the same day, the US House Speaker Nancy Pelosi set off on a tour of Asia without any mention of Taiwan on her official itinerary, which included Singapore, Malaysia, South Korea and Japan, but landed in Taiwan too in a military plane and said, “Forty three years ago, America made a promise to always stand with Taiwan… today our delegation came to Taiwan to make it unequivocally clear we will not abandon our commitment to Taiwan,” reaffirming that the US won’t ever leave the democracy in Taiwan unguarded. 

In retaliation, China started a series of military operations surrounding the island of Taiwan from Tuesday night.

“We have the determination, ability and confidence to ensure national security,” Taiwan said in a statement.

Initially America was an ally to Taiwan and Pakistan. Pakistan brought democratic America in touch with communist China. Thereafter following the footsteps of capitalist America, China also made its fortune by supplying to Europe. Now cash-rich Communist China has formed an axis with Russia and North Korea firmly in its league. 

America’s adherence to one China policy is clearly in conformity with its adherence to democracy above all so as to the Communist Party of China’s insistence on one China policy backfires democracy into the mainland. Democracy from America seems out for that.  

System Engineering

Managing The Hostname For Your Linux Server

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A hostname is a selectable name for your Dedicated Server or VPS host. These are composed of a sequence of labels attached with dots. Here’s how you can change the hostname of your server by following a few easy steps.

  1. Login to your SANGKRIT.net account
  2. Visit your My Products page
  3. Click the Servers option
  4. Click Manage
  5. Select Settings
  6. Next to Hostname, click Change
  7. Enter the new hostname in the Server Hostname field
  8. Click Save.

Remember, the hostname should meet the requirements of an appropriate hostname before you can save it. Once you save your changes, the new hostname will appear in the Settings section and will start to work like the old one.

System Engineering

Managing Ports On Your Server, Nydus & Port 2224

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For a server to function smoothly, port 2224 is kept open by default during its provisioning time.

But at the same time, if your VPS or dedicated server affairs don’t complete due to the reason of a blocked port 2224, you can unblock it and try again after a few minutes.

On Windows servers, you can use the Windows Defender Firewall for unblocking the port. And for Linux servers, the steps are given below.

For unblocking ports on a Linux server you can use firewallD. In case you use a different firewall utility, you will need to change the given sample code.

First of all, connect your server via SSH and then run the following command:

sudo firewall-cmd –permanent –zone=public –add-port=2224/tcp

Followed by these commands:

sudo firewall-cmd –reload

sudo firewall-cmd –list-ports

These two commands are for confirming the ports are cleared i.e. unblocked.

Next, What is Nydus?

It refers to a pair of agent applications (nydus-ex and nydus-ex-api) that functions on your dedicated server and communicates with your server dashboard.

They provide resource metrics and perform the server functions that you’ve requested. The agent listens on port 2224.

Since the server dashboard and its upgrades are dependent on Nydus, so blocking port 2224 – or removing Nydus from your server will stop these features.

In a case, if you accidentally or knowingly remove the Nydus components, you are required to restore them from a backup that you have taken before. If you don’t have a backup, you will need to rebuild your server.