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	<title>Ubuntu22.04_en | Linux Server Construction</title>
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	<link>https://korodes.com</link>
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	<lastBuildDate>Thu, 03 Apr 2025 07:51:15 +0000</lastBuildDate>
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	<title>Ubuntu22.04_en | Linux Server Construction</title>
	<link>https://korodes.com</link>
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	<item>
		<title>Ubuntu Server22.04 : Obtaining and Installing Images</title>
		<link>https://korodes.com/en/ubuntu22_01_en/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Tue, 17 May 2022 09:52:30 +0000</pubDate>
				<category><![CDATA[Ubuntu22.04_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=6878</guid>

					<description><![CDATA[Download Ubuntu Server 22.04 installation image

Ubuntu Server installation media can be downloaded from official sites on the Internet.
You will need to create an installation CD/DVD from the downloaded iso file. (approx. 1.2G)
The iso file itself is available for installation on a virtual machine using Vmware or other software.
The iso file can be downloaded from the "Official Ubuntu Download Site".

Ubuntu Server 22.04 installed

Change the BIOS so that the PC can boot from the installation disk created above.]]></description>
		
		
		
			</item>
		<item>
		<title>Ubuntu22.04 Server : Backup and Restore</title>
		<link>https://korodes.com/en/ubuntu22_12_en/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Tue, 24 May 2022 00:55:20 +0000</pubDate>
				<category><![CDATA[Ubuntu22.04_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=6980</guid>

					<description><![CDATA[1. System Backup
1.1 Backup under /var/www/html

①Create /var/www/system directory

# mkdir -p /var/www/system

②/Create backup_all.sh script under var/www/system

# vi /var/www/system/backup_all.sh


backup_all.sh script contents]]></description>
		
		
		
			</item>
		<item>
		<title>Ubuntu22.04 Server : Logwatch , Disk usage check</title>
		<link>https://korodes.com/en/ubuntu22_11_en/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Mon, 23 May 2022 13:19:05 +0000</pubDate>
				<category><![CDATA[Ubuntu22.04_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=6975</guid>

					<description><![CDATA[1. DiCE  Install

Whenever the global IP changes, which happens when the network is disconnected or the router is disconnected and rebooted, the dynamic DNS must be accessed to inform the user that the global IP has changed. DiCE does this automatically!]]></description>
		
		
		
			</item>
		<item>
		<title>Ubuntu22.04 Server : SNORT ,  Tripwire</title>
		<link>https://korodes.com/en/ubuntu22_10_en/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sun, 22 May 2022 12:44:31 +0000</pubDate>
				<category><![CDATA[Ubuntu22.04_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=6968</guid>

					<description><![CDATA[1.SNORT Install

Snort is an open source network intrusion detection system capable of performing real-time traffic analysis and packet logging on IP networks.

It can perform "protocol analysis," "content search," and "matching," and can be used to detect a variety of attacks, including "buffer overflows," "stealth port scans," "CGI attacks," "SMB probes," "OS fingerprinting attempts," "semantic URL attacks," and "server message block probes.]]></description>
		
		
		
			</item>
		<item>
		<title>Ubuntu22.04 Server : MySQL 8  ,  WordPress</title>
		<link>https://korodes.com/en/ubuntu22_09_en/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sun, 22 May 2022 06:16:19 +0000</pubDate>
				<category><![CDATA[Ubuntu22.04_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=6939</guid>

					<description><![CDATA[1. MySQL 8 Install
1. 1Install
# apt -y install mysql-server
1.2. MySQL Server Security Settings

Run the tool mysql_secure_installation to configure security-related settings for the MySQL server.
Once executed, several security settings are initiated in the form of questions.
First, you will be asked if you want to use a plugin for password validation as follows. Password validation is a way to check the strength of a user's password for MySQL and restrict it to only accepting passwords that are secure enough. For example, it must be at least as many characters long as the user's password and must contain at least one symbol and one number. You can set this requirement by asking the following questions
Type y and press Enter if you like]]></description>
		
		
		
			</item>
		<item>
		<title>Ubuntu22.04 Server : Let&#039;s Encrypt  ,  Apache・Mail  SSL</title>
		<link>https://korodes.com/en/ubuntu22_08_en/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sat, 21 May 2022 06:26:24 +0000</pubDate>
				<category><![CDATA[Ubuntu22.04_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=6931</guid>

					<description><![CDATA[1. Certificate Acquisition (Let's Encrypt)
1.1 advance preparation

①Enable mod_ssl

# a2enmod ssl

②Install client tool to obtain Let's Encrypt certificate

# apt -y install certbot

③Obtaining Certificates
It is assumed that a web server such as Apache httpd or Nginx is running.
If the Web server is not running on the server, perform step ④.
It is also assumed that the server on which the work is to be performed (the server with the FQDN from which the certificate is to be obtained) is accessible from the Internet at port 80.]]></description>
		
		
		
			</item>
		<item>
		<title>Ubuntu22.04 Server : Anti-virus　,　Mail Server</title>
		<link>https://korodes.com/en/ubuntu22_07_en/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Fri, 20 May 2022 05:00:39 +0000</pubDate>
				<category><![CDATA[Ubuntu22.04_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=6926</guid>

					<description><![CDATA[1.Introduced Clamav antivirus software
1.1 Install
# apt install clamav clamav-daemon

The clamav-related configuration files are installed in the /etc/clamav/ folder.

1.2 Virus Definition Update
# systemctl stop clamav-freshclam 
# freshclam]]></description>
		
		
		
			</item>
		<item>
		<title>Ubuntu Server 22.04 : WEB Server(Apache)</title>
		<link>https://korodes.com/en/ubuntu22_06_en/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Wed, 18 May 2022 13:14:07 +0000</pubDate>
				<category><![CDATA[Ubuntu22.04_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=6921</guid>

					<description><![CDATA[Apache2 installation.

Allow http:80 port and https:443 port in UFW first.

# ufw allow http
# ufw allow https
# ufw reload
1 Install Apache2
# apt -y install apache2
2 Apache2 Basic Settings]]></description>
		
		
		
			</item>
		<item>
		<title>Ubuntu Server 22.04 : NTP  ,  FTP Server(Vsftpd)</title>
		<link>https://korodes.com/en/ubuntu22_05_en/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Wed, 18 May 2022 13:12:32 +0000</pubDate>
				<category><![CDATA[Ubuntu22.04_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=6915</guid>

					<description><![CDATA[1. Install a time synchronization service NTP server
# apt -y install chrony
# vi /etc/chrony/chrony.conf
# Lines 20-23.：Comment the default settings and add the NTP server for your time zone.
#pool ntp.ubuntu.com     iburst maxsources 4
#pool 0.ubuntu.pool.ntp.org iburst maxsources 1
#pool 1.ubuntu.pool.ntp.org iburst maxsources 1
#pool 2.ubuntu.pool.ntp.org iburst maxsources 2]]></description>
		
		
		
			</item>
		<item>
		<title>Ubuntu Server 22.04 : SSH public key cryptosystem</title>
		<link>https://korodes.com/en/ubuntu22_04_en/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Wed, 18 May 2022 01:48:17 +0000</pubDate>
				<category><![CDATA[Ubuntu22.04_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=6905</guid>

					<description><![CDATA[SSH connection with authentication using RSA public key cryptography
Creation of 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 key pairs.
This time, we will create a key set using the RSA cipher used in the SSH protocol Version 2.
Creation of public/private key pairs is performed with remote login user privileges (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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