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	<title>Debian12.1_en | Linux Server Construction</title>
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	<link>https://korodes.com</link>
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	<lastBuildDate>Thu, 20 Nov 2025 23:29:45 +0000</lastBuildDate>
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	<title>Debian12.1_en | Linux Server Construction</title>
	<link>https://korodes.com</link>
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	<item>
		<title>Debian12.1 : OS Install</title>
		<link>https://korodes.com/en/debian12_en_01/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Wed, 14 Jun 2023 19:37:00 +0000</pubDate>
				<category><![CDATA[Debian12.1_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=17424</guid>

					<description><![CDATA[1.Debian12  Overview

In this article, we will explain how to build a server with Debian, the basis of the user-friendly Linux distribution UBUNTU.
The latest is Debian 12.0 (codenamed "bookworm"), released on June 10, 2023

2.Download Debian installation image

Debian12 download site  https://www.debian.org/

Access the above official website and download "debian-12.0.0-amd64-netinst.iso." which is convenient for setup in an environment connected to the Internet.（Fits on a single CD）
NETINST allows you to download and install the necessary packages from the Internet, so you can use a smaller installer than a full installer.
Click through the following screens in order.]]></description>
		
		
		
			</item>
		<item>
		<title>Debian12.1 : Nagios Server , Tripwire Install</title>
		<link>https://korodes.com/en/debian12_en_11/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Tue, 11 Jul 2023 00:17:15 +0000</pubDate>
				<category><![CDATA[Debian12.1_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=17573</guid>

					<description><![CDATA[Open source integrated monitoring software "Nagios Server" installed

Nagios is an open source monitoring solution running on Linux.
Nagios is designed to periodically check critical network, application, or server parameters.
These parameters include microprocessor load, number of running processes, log files, disk and memory usage, as well as many other services such as SMTP (Simple Mail Transfer Protocol), HTTP (Hypertext Transfer Protocol), POP3 (Post Office Protocol 3), etc. can be checked.

These parameters require a microprocessor load, a database such as PHP or MySQL to run Nagois, and a web server such as Apache or Nginx. We will proceed under the assumption that all of these have already been configured]]></description>
		
		
		
			</item>
		<item>
		<title>Debian12.1 : System Backup and Restore</title>
		<link>https://korodes.com/en/debian12_en_12/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Wed, 21 Jun 2023 03:32:02 +0000</pubDate>
				<category><![CDATA[Debian12.1_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=17561</guid>

					<description><![CDATA[1. System Backup
1.1 Backup under /var/www/html

①　Create backup_all.sh script under /opt/script
1.2 MariaDB database backup

①Create db_backup.sh script under /opt/script

# vi /opt/script/db_backup.sh

db_backup.sh script contents
2. System Restore
2.1 Restore backup files under HTML

① Store HTML backup files used for backup in the "/ (root)" directory
Select the backup file with the latest timestamp (e.g. www_back_20220501.tar.gz)
2.2 Restore MariaDB database

①Save DB backup file to any directory and extract data

# cd /var/www/backup/db_bak]]></description>
		
		
		
			</item>
		<item>
		<title>Debian12.1 :  Suricata , Logwatch , Chkrootkit , Disk Usage Check Script</title>
		<link>https://korodes.com/en/debian12_en_10/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Mon, 19 Jun 2023 03:27:40 +0000</pubDate>
				<category><![CDATA[Debian12.1_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=17552</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.
 Logwatch,Chkrootkit,Disk Usage Check Script install]]></description>
		
		
		
			</item>
		<item>
		<title>Debian12.1 : MariaDB , WordPress Install</title>
		<link>https://korodes.com/en/debian12_en_09/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Mon, 19 Jun 2023 01:16:58 +0000</pubDate>
				<category><![CDATA[Debian12.1_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=17545</guid>

					<description><![CDATA[1. MariaDB

1.1 Install
1.4. MariaDB Server Security Settings

MariaDB comes with a default security script, mariadb-secure-installation, which can be used to improve the security of your MariaDB installation, including

Set a password for the root account (if necessary).
Disable remote root login to the database.
Delete anonymous user accounts.
Delete the test database to which anonymous users have access by default.
2.WordPress

2.1 Database Creation

Create a database for Word Press (for example, in this case, the database name is "wp_db", the user name is "wp_user", and the password is "?Y123456y")]]></description>
		
		
		
			</item>
		<item>
		<title>Debian12.1 : Let&#039;s Encrypt WEB , Mail Server SSL</title>
		<link>https://korodes.com/en/debian12_en_08/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sun, 18 Jun 2023 07:44:34 +0000</pubDate>
				<category><![CDATA[Debian12.1_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=17528</guid>

					<description><![CDATA[1. Obtain a certificate (Let's Encrypt)
1.1 advance preparation

①Enable mod_ssl

# a2enmod ssl
2. SSL/TLS (Let's Encrypt) configuration for Apache2

①Edit Apache2 SSL-related configuration files
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>Debian12.1 : Anti-virus(Clamav)　、Mail Server</title>
		<link>https://korodes.com/en/debian12_en_07/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sat, 17 Jun 2023 05:32:18 +0000</pubDate>
				<category><![CDATA[Debian12.1_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=17522</guid>

					<description><![CDATA[1.Antivirus software Clamav installed

Install Clam AntiVirus, a free anti-virus software for Linux, as an anti-virus measure.
By installing this anti-virus software, you can not only scan the entire server for viruses, but also scan incoming and outgoing mail for viruses if you build and configure a mail server.
2. Mail server installation

Postfix was developed as a Mail Transport Agent (MTA) to replace sendmail, and is a mail server that is highly compatible with sendmail, secure, easy to maintain, and fast.
In addition, since Postfix only functions as an SMTP server for sending mail, the POP server Dovecot for receiving mail will be installed separately in the latter half.
3 Applied ClamAV to mail server Postfix

Set up Postfix and Clamav to work together to scan incoming and outgoing mail in real time.
4 Apply spam checks to the mail server

4.1 Spam checking using spamassassin and procmail

①spamassassin and procmail installation]]></description>
		
		
		
			</item>
		<item>
		<title>Debian12.1 : WEB Server(Apache) Install</title>
		<link>https://korodes.com/en/debian12_en_06/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sat, 17 Jun 2023 03:03:52 +0000</pubDate>
				<category><![CDATA[Debian12.1_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=17517</guid>

					<description><![CDATA[Web server Apache2 installation

Allow http:80 and https:443 ports in UFW before installation
3.  Apache2; Using Perl Scripts

Enable CGI to make Perl scripts available
①Install Perl
4 Apache2 : Using PHP Scripts

①Install PHP
5. Virtual Host Settings

Copy the default configuration file (file name is arbitrary, in this case vhost-yourdomain.conf as an example) and configure the virtual host
6. 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 information, so there is almost no risk of information leakage.]]></description>
		
		
		
			</item>
		<item>
		<title>Debian12.1 : NTP ,FTP Server Installation</title>
		<link>https://korodes.com/en/debian12_en_05/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sat, 17 Jun 2023 02:06:46 +0000</pubDate>
				<category><![CDATA[Debian12.1_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=17486</guid>

					<description><![CDATA[1. Install NTP server
2. Install FTP Server

2.1 Install Vsftpd]]></description>
		
		
		
			</item>
		<item>
		<title>Debian12.1 : SSH connection using public key cryptography</title>
		<link>https://korodes.com/en/debian12_en_04/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sat, 17 Jun 2023 01:41:23 +0000</pubDate>
				<category><![CDATA[Debian12.1_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=17460</guid>

					<description><![CDATA[Create public and private key pairs

Create a public/private key pair for a user connecting to a Linux server using OpenSSH.
Use ssh-keygen to create the key pair.
This time, we will create a key set using the RSA cipher used in the SSH protocol Version 2.
The creation of a public/private key pair is performed with remote login user privileges (e.g., huong).
If you do not specify the destination and file name, id_rsa and id_rsa.pub will be created in /home/huong/.ssh/. On the way, enter the password for the key.]]></description>
		
		
		
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