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	<title>Almalinux9.3_en | Linux Server Construction</title>
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	<link>https://korodes.com</link>
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	<lastBuildDate>Wed, 25 Mar 2026 03:56:57 +0000</lastBuildDate>
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	<title>Almalinux9.3_en | Linux Server Construction</title>
	<link>https://korodes.com</link>
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	<item>
		<title>AlmaLinux9.3 : WEB Server(Apache2) &#038; Virtual Hosts</title>
		<link>https://korodes.com/en/alma9-3_en_06/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Tue, 16 Apr 2024 06:12:57 +0000</pubDate>
				<category><![CDATA[Almalinux9.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=24834</guid>

					<description><![CDATA[1.Apache2 Install , Virtual Host Configuration
1.1 Apache2 install

①httpd install

# dnf -y install httpd
1.3 Virtual Host Settings

Assign and configure the domain name [rocky.korodes.com] to the document root [/var/www/html/rocky.korodes.com] directory for virtual host operation
2. Use of CGI Scripts

①CGI availability check
3. PHP installation and configuration
1.PHP8 Install
4. Digest authentication with Apache2

Since Basic Authentication, a well-known authentication authorization method for http, sends authentication information in plain text, there is a risk of ID and password leakage if the packet is intercepted.
On the other hand, Digest Authentication encrypts and transmits authentication informa]]></description>
		
		
		
			</item>
		<item>
		<title>AlmaLinux9.3 : System Backup and Restore</title>
		<link>https://korodes.com/en/alma9-3_en_12/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Wed, 17 Apr 2024 05:44:07 +0000</pubDate>
				<category><![CDATA[Almalinux9.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=24885</guid>

					<description><![CDATA[1.Website data backup
1-1.Backup under /var/www/html

①Create backup script file

# cd /var/www/system
# vi backup_html.sh
2.MySQL database backup


①Create backup script file

# cd /var/www/system
# vi db_my_backup.sh
3.Restore backup files under html

①Store HTML backup files in "/ (root)" directory
4.Restore Mysql backup file

①Save the database backup file to any directory and
（In the example, the directory is "/var/www/backup/db_bak".）Extracting data]]></description>
		
		
		
			</item>
		<item>
		<title>AlmaLinux9.3 : Suricata , Tripwire , Chkrootkit</title>
		<link>https://korodes.com/en/alma9-3_en_10/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Wed, 17 Apr 2024 04:16:08 +0000</pubDate>
				<category><![CDATA[Almalinux9.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=24870</guid>

					<description><![CDATA[Suricata

SURICATA IDS/IPS is an open source IDS that monitors communications on the network and detects suspicious traffic.
The basic mechanism is signature-based, so it can detect predefined unauthorized communications. Suricata is also characterized by its ability to provide protection as well as detection.

1.advance preparation

①Activate the EPEL Repository
Tripwire

1.Installation
# dnf install -y tripwire
Chkrootkit

①Download and install chkrootkit]]></description>
		
		
		
			</item>
		<item>
		<title>AlmaLinux9.3 : MySQL8 , WordPress Install</title>
		<link>https://korodes.com/en/alma9-3_en_09/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Wed, 17 Apr 2024 03:57:59 +0000</pubDate>
				<category><![CDATA[Almalinux9.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=24859</guid>

					<description><![CDATA[MySQL8 Install

＃ dnf -y install mysql-server

charset.cnf   Create a new one with the f
WordPress Install

1. Create database for Word Press

As an example, assume database [wp_db] database user [wp_user] password [?Ww123456]]]></description>
		
		
		
			</item>
		<item>
		<title>AlmaLinux9.3 : SSL Certificate Acquisition( Let&#039;s Encrypt ) , Apache SSL , Mail SSL/TLS</title>
		<link>https://korodes.com/en/alma9-3_en_08/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Wed, 17 Apr 2024 02:17:30 +0000</pubDate>
				<category><![CDATA[Almalinux9.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=24851</guid>

					<description><![CDATA[1.Obtain an SSL certificate ( Let's Encrypt )

Install the latest open ssl

# dnf install openssl-devel
1.1 advance preparation

1.Package management system Snappy installed
Since the SSL certificate issuing tool "certbot" of Let's Encrypt is recommended to be installed using "snap" after 2021, install Snapd first.(Can also be installed the traditional way with dnf or yum)
2. Converting Apache to https

Install the following just in case

# dnf -y install mod_ssl
3. SSL/TLS (Let's Encrypt) settings on the mail server
3.1 Obtaining a certificate for the mail server

Obtain a certificate for the mail server, but it cannot be obtained in the same way as above, so the following with the "--standalone" option fails.]]></description>
		
		
		
			</item>
		<item>
		<title>AlmaLinux9.3 : Anti-virus(Clamav) , Mail Server</title>
		<link>https://korodes.com/en/alma9-3_en_07/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Tue, 16 Apr 2024 23:59:59 +0000</pubDate>
				<category><![CDATA[Almalinux9.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=24842</guid>

					<description><![CDATA[clamav (anti-virus software] Install

1.Clam AntiVirus install

# dnf -y install clamav clamd clamav-update

2.Clam AntiVirus  Configuration File Edit
Mail Server Install
1. Postfix

1.1 Install
Install Postfix and build an SMTP server
Mail : Postfix + Clamav + clamav-milter+SpamAssassin

1.Real-time scanning of e-mails

①clamav-milter Install
Virus checks are performed on the mail server side using Clam AntiVirus.
The mail server and Clam AntiVirus are linked using clamav-milter.]]></description>
		
		
		
			</item>
		<item>
		<title>AlmaLinux9.3 : FTP Server , Samba File Server</title>
		<link>https://korodes.com/en/alma9-3_en_05/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Tue, 16 Apr 2024 05:52:03 +0000</pubDate>
				<category><![CDATA[Almalinux9.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=24825</guid>

					<description><![CDATA[1.FTP Server
1. 1 Vsftpd Install
# dnf -y install vsftpd
1.2 Configure Vsftpd

Save the unedited vsftpd.conf with .bak
3. File server installation with Samba
Build a file server with access rights that requires user authentication with Samba.
Installation Procedure
①Create shared folders with access rights that require user authentication
②Accessible group creation
③Creation of users belonging to accessible groups
④Configuration File Editing]]></description>
		
		
		
			</item>
		<item>
		<title>AlmaLinux9.3 : SSH connection with public key</title>
		<link>https://korodes.com/en/alma9-3_en_04/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Tue, 16 Apr 2024 05:16:32 +0000</pubDate>
				<category><![CDATA[Almalinux9.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=24816</guid>

					<description><![CDATA[SSH connection with authentication using public key cryptography

 Creation of public and private key pairs

Create a public/private key pair for a user connecting to the Linux server using OpenSSH.
Use ssh-keygen to create key pairs.
Creation of public/private key pairs is performed with remote login user privileges。
If you do not specify the destination and file name, id_ed25519 and id_ed25519.pub will be created in /home/(user name)/.ssh/. On the way, enter the password for the key.]]></description>
		
		
		
			</item>
		<item>
		<title>AlmaLinux9.3 : SSH、Firewalld、NTP Server</title>
		<link>https://korodes.com/en/alma9-3_en_03/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Mon, 15 Apr 2024 07:25:11 +0000</pubDate>
				<category><![CDATA[Almalinux9.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=24812</guid>

					<description><![CDATA[1. SSH remote connection

SSH is a service for connecting remotely to a server and is basically running immediately after the OS is installed, but the default settings are somewhat insecure.
Here we will configure the default settings to increase the security of ssh connections.
2.How to set up a firewall (firewalld)

In AlmaLinux, the firewall is set to firewalld by default and is enabled during OS installation.

2.1 How to use the "firewall-cmd" command to control "firewalld"

1)How to use the "firewall-cmd" command to control "firewalld"

①Check firewalld operation status
3.Remote connection from Windows

Setup in Windows
Start setting up a remote connection from Windows, using "Tera Term" as the terminal emulator.
Start Tera Term, cancel the startup screen, and then select "New Connection" from "File" in the Tera Term menu.]]></description>
		
		
		
			</item>
		<item>
		<title>AlmaLinux9.3 : Various settings after installation</title>
		<link>https://korodes.com/en/alma9-3_en_02/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Mon, 15 Apr 2024 06:11:41 +0000</pubDate>
				<category><![CDATA[Almalinux9.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=24806</guid>

					<description><![CDATA[1. Disabling SELinux

First, disable selinux. selinux is a feature that improves auditing and security in Linux, but when enabled, it places considerable restrictions on the behavior of services and on what can be configured. Therefore, it is basically disabled in many cases.
SELinux operating modes
Enforcing : SELinux functionality is enabled and access control is enabled
Permissive : SElinux will warn, but no access restrictions will be placed
disabled : Both SElinux function and access control are disabled
2. System Modernization

Update packages as soon as possible after OS installation.
A kernel update may require rebooting the system or stopping services, or worse, a kernel panic may occur and the system may not boot. It is wiser to exclude the kernel from the update.
The kernel can be excluded from updates by running dnf -y update with "--exclude=kernel*" after it.]]></description>
		
		
		
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