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	<title>OracleLinux9.2-en | Linux Server Construction</title>
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	<link>https://korodes.com</link>
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	<lastBuildDate>Wed, 25 Mar 2026 04:47:12 +0000</lastBuildDate>
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	<title>OracleLinux9.2-en | Linux Server Construction</title>
	<link>https://korodes.com</link>
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	<item>
		<title>OracleLinux9.2 : WEB Server (Apache)</title>
		<link>https://korodes.com/en/oracle9-2_en_06/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sun, 13 Aug 2023 09:45:57 +0000</pubDate>
				<category><![CDATA[OracleLinux9.2-en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=18340</guid>

					<description><![CDATA[1.Apache2 installation and virtual host configuration
1.1 Apache2

①httpd install

# dnf -y install httpd
1.3 Virtual Host Settings

Assign and configure the domain name [oracle.korodes.com] to the document root [/var/www/html/oracle.korodes.com] directory for virtual host operation

# vi /etc/httpd/conf.d/vhost.conf
2. Confirmation of CGI Script Usage

①Confirmation of CGI availability
3. PHP installation and configuration
1.PHP install
①Install]]></description>
		
		
		
			</item>
		<item>
		<title>OracleLinux9.2 : System Backup and Restore</title>
		<link>https://korodes.com/en/oracle9-2_en_12/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Tue, 15 Aug 2023 04:09:44 +0000</pubDate>
				<category><![CDATA[OracleLinux9.2-en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=18401</guid>

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

①Create backup script file
2.MySQL database backup


①Create backup script file

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

① Store HTML backup files in "/ (root)" directory

# cd /var/www/backup/html_bak
# cp html_back_20220610.tar.gz / ←Specify the backup file with the latest date
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

# cd /var/www/backup/db_bak]]></description>
		
		
		
			</item>
		<item>
		<title>OracleLinux9.2 : Tripwire , Chkrootkit , Logwatch , Disk Usage Check Script</title>
		<link>https://korodes.com/en/oracle9-2_en_11/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Tue, 15 Aug 2023 00:03:34 +0000</pubDate>
				<category><![CDATA[OracleLinux9.2-en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=18394</guid>

					<description><![CDATA[Tripwire
1.Download and installation
# cd /usr/local/src
# wget https://rpmfind.net/linux/epel/9/Everything/x86_64/Packages/t/tripwire-2.4.3.7-13.el9.x86_64.rpm
# rpm -Uvh tripwire-2.4.3.7-13.el9.x86_64.rpm
Chkrootkit

①Download and install chkrootkit

# cd /usr/local/src
# wget https://launchpad.net/chkrootkit/main/0.55/+download/chkrootkit-0.55.tar.gz
# tar xvf chkrootkit-0.55.tar.gz
Logwatch

①Install

# dnf install logwatch
Introduce disk usage check script
1. Script Creation
# cd /var/www/system
# vi disk_capacity_check.sh]]></description>
		
		
		
			</item>
		<item>
		<title>OracleLinux9.2 : Suricata , SNORT Install</title>
		<link>https://korodes.com/en/oracle9-2_en_10/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Mon, 14 Aug 2023 07:47:39 +0000</pubDate>
				<category><![CDATA[OracleLinux9.2-en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=18389</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
SNORT

Snort is an open source network intrusion detection system that can perform 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 such as buffer overflows, stealth port scans, CGI attacks, SMB probes, OS fingerprinting attempts, semantic URL attacks, and server message block probes. detection.]]></description>
		
		
		
			</item>
		<item>
		<title>OracleLinux9.2 : SSL Certificate Acquisition( Let&#039;s Encrypt ) , WEB/Mail server SSL</title>
		<link>https://korodes.com/en/oracle9-2_en_08/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Mon, 14 Aug 2023 02:11:16 +0000</pubDate>
				<category><![CDATA[OracleLinux9.2-en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=18361</guid>

					<description><![CDATA[1.SSL Certificate Acquisition ( Let's Encrypt )

Install the latest open ssl

# dnf install openssl-devel
1.1 advance preparation

1.Package management system Snappy installation
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

# 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>OracleLinux9.2 : Clamav(anti-virus)　, Mail Server</title>
		<link>https://korodes.com/en/oracle9-2_en_07/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sun, 13 Aug 2023 12:45:29 +0000</pubDate>
				<category><![CDATA[OracleLinux9.2-en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=18352</guid>

					<description><![CDATA[Clamav(anti-virus)

1.Clam AntiVirus install

# dnf -y install clamav clamd clamav-update
Mail Server Installation
1. Postfix

1.1 Install
Install Postfix and build an SMTP server
Mail server : Postfix + Clamav + Amavisd+SpamAssassin
1.Real-time scanning of e-mails
①Install Amavisd and Clamav Server]]></description>
		
		
		
			</item>
		<item>
		<title>OracleLinux9.2 : FTP Server , Samba FileServer Install</title>
		<link>https://korodes.com/en/oracle9-2_en_05/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sat, 12 Aug 2023 12:43:15 +0000</pubDate>
				<category><![CDATA[OracleLinux9.2-en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=18334</guid>

					<description><![CDATA[1.FTP Server
1.1vsftpd Install
# dnf -y install vsftpd
1.2vsftpd configuration
Save the unedited vsftpd.conf with .bak
# cp /etc/vsftpd/vsftpd.conf /home/huong/vsftpd.conf.bak
2. vsftpd SSL/TLS

Configure Vsftpd to use SSL/TLS

2.1 Create self-signed certificates

This work is not required if you are using a trusted, legitimate certificate such as Let's Encryp
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 Edit]]></description>
		
		
		
			</item>
		<item>
		<title>OracleLinux9.2 : SSH connection with SSH key pair</title>
		<link>https://korodes.com/en/oracle9-2_en_04/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sat, 12 Aug 2023 12:33:08 +0000</pubDate>
				<category><![CDATA[OracleLinux9.2-en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=18328</guid>

					<description><![CDATA[SSH connection with authentication using public key 
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>OracleLinux9.2 : SSH Remote connection , Firewalld , NTP Server</title>
		<link>https://korodes.com/en/oracle9-2_en_03/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sat, 12 Aug 2023 12:30:51 +0000</pubDate>
				<category><![CDATA[OracleLinux9.2-en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=18323</guid>

					<description><![CDATA[1.Setting up a remote connection via SSH

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.Firewall (Firewalld) settings

In Oracle, the firewall is firewalld configured by default and enabled during OS installation.

To briefly explain "firewalld," when setting communication control policies, communication permission/blocking rules are applied to predefined zones, and these zones are then assigned to each NIC (network adapter).]]></description>
		
		
		
			</item>
		<item>
		<title>OracleLinux9.2 : Initial settings after OS installation</title>
		<link>https://korodes.com/en/oracle9-2__en_02/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sat, 12 Aug 2023 12:27:41 +0000</pubDate>
				<category><![CDATA[OracleLinux9.2-en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=18305</guid>

					<description><![CDATA[1.Install bash completion extension package
# dnf -y install bash-completion
# reboot
2.Disabling SELinux

First, disable selinux.　selinux is a feature that improves auditing and security in Linux, but when enabled, it can limit the behavior of services and the contents of the configuration considerably.
Therefore, it is basically a case of invalidation 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]]></description>
		
		
		
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