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2023

OracleLinux9.2-en

OracleLinux9.2 : SSL Certificate Acquisition( Let's Encrypt ) , WEB/Mail server SSL

1.SSL Certificate Acquisition ( Let's Encrypt )Install the latest open ssl# dnf install openssl-devel1.1 advance preparation1.Package management system Snappy installationSince 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 httpsInstall the following# dnf -y install mod_ssl3. SSL/TLS (Let's Encrypt) settings on the mail server3.1 Obtaining a certificate for the mail serverObtain 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.
2023.08.14
OracleLinux9.2-en
OracleLinux9.2-en

OracleLinux9.2 : Clamav(anti-virus)　, Mail Server

Clamav(anti-virus)1.Clam AntiVirus install# dnf -y install clamav clamd clamav-updateMail Server Installation1. Postfix1.1 InstallInstall Postfix and build an SMTP serverMail server : Postfix + Clamav + Amavisd+SpamAssassin1.Real-time scanning of e-mails①Install Amavisd and Clamav Server
2023.08.13
OracleLinux9.2-en
OracleLinux9.2-en

OracleLinux9.2 : WEB Server (Apache)

1.Apache2 installation and virtual host configuration1.1 Apache2①httpd install# dnf -y install httpd1.3 Virtual Host SettingsAssign 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.conf2. Confirmation of CGI Script Usage①Confirmation of CGI availability3. PHP installation and configuration1.PHP install①Install
2023.08.13
OracleLinux9.2-en
OracleLinux9.2-en

OracleLinux9.2 : FTP Server , Samba FileServer Install

1.FTP Server1.1vsftpd Install# dnf -y install vsftpd1.2vsftpd configurationSave the unedited vsftpd.conf with .bak# cp /etc/vsftpd/vsftpd.conf /home/huong/vsftpd.conf.bak2. vsftpd SSL/TLSConfigure Vsftpd to use SSL/TLS2.1 Create self-signed certificatesThis work is not required if you are using a trusted, legitimate certificate such as Let's Encryp3. File server installation with SambaBuild a file server with access rights that requires user authentication with Samba.Installation Procedure①Create shared folders with access rights that require user authentication②Accessible group creation③Creation of users belonging to accessible groups④Configuration File Edit
2023.08.12
OracleLinux9.2-en
OracleLinux9.2-en

OracleLinux9.2 : SSH connection with SSH key pair

SSH connection with authentication using public key Creation of public and private key pairsCreate 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.
2023.08.12
OracleLinux9.2-en
OracleLinux9.2-en

OracleLinux9.2 : SSH Remote connection , Firewalld , NTP Server

1.Setting up a remote connection via SSHSSH 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) settingsIn 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).
2023.08.12
OracleLinux9.2-en
OracleLinux9.2-en

OracleLinux9.2 : Initial settings after OS installation

1.Install bash completion extension package# dnf -y install bash-completion# reboot2.Disabling SELinuxFirst, 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 modesEnforcing : SELinux functionality is enabled and access control is enabledPermissive : SElinux will warn, but no access restrictions will be placeddisabled : Both SElinux function and access control are disabled
2023.08.12
OracleLinux9.2-en
OracleLinux9.2-en

OracleLinux9.2 : OS Install

OracleLinux9.2Oracle Linux provides a 100% application binary compatible alternative to Red Hat Enterprise Linux and CentOS Linux for both hybrid and multi-cloud environments.Since 2006, Oracle Linux has been completely free to download and use. Source code, binaries and updates are provided free of charge. It is freely redistributable. Free for use in production environments.今回は、最新のOracle Linux9.2(2023年5月リリース)で進めていきます。This time, we will proceed with the latest Oracle Linux 9.1.(May 2023 Release)１．Oracle Linux9.2 DownloadOracle Linux 9.2 installation image (OracleLinux-R9-U2-x86_64-dvd.iso ) can be downloaded from the following sitehttps://www.oracle.com/linux/
2023.08.12
OracleLinux9.2-en
openSUSE_15.3_en

Opensuse 15.x : Zabbix6 Install

Installation of open source integrated monitoring software "Zabbix"Zabbix is an open source integrated monitoring software for centralized monitoring of servers, networks and applications. It provides monitoring, fault detection and notification functions required for integrated monitoring. With Zabbix agent and SNMP support for many platforms, you can monitor your entire system with a single Zabbix.To run Zabbix, you need PHP programming language, MySQL/MariaDB as database server, and a web server such as Apache or Nginx.In this case, we will proceed on the assumption that all of the following conditions have already been configured.・OS : OpenSUSE15.5・Web server : Apache2.4.51・PHP8.0.29・Database : MariaDB10.6Please refer to the following to configure the above
2023.09.03
OpenSUSE15.5_enopenSUSE15.4_enopenSUSE_15.3_en
OpenSUSE15.5_en

OpenSUSE15.5 : Tripwire, Logwatch Install

1. TripwireTripwire is a host-based intrusion detection system (IDS) that monitors files and directories and notifies you when changes are made.1.1 Install and configuration①Install2. Logwatch①Logwatch install
2023.06.14
OpenSUSE15.5_en
OpenSUSE15.5_en

OpenSUSE15.5 : Snort2 Install

1.SNORT2Snort is a network-based IDS (Intrusion Detection System). It captures packets flowing over a network and detects suspicious packets.The source file is used directly from https://snort.org/.1.1 Advance preparationInstall required libraries
2023.06.13
OpenSUSE15.5_en
OpenSUSE15.5_en

OpenSUSE15.5 : Obtain SSL Certificate (Let's Encrypt)　、Web Server SSL

1.Obtain an SSL Certificate (Let's Encrypt)PreparationEnable mod_ssl1.1Certificate Installation2. Web server SSL conversion2.1 SSL Configuration
2023.06.13
OpenSUSE15.5_en
OpenSUSE15.5_en

OpenSUSE15.5 : MariaDB , WordPress Install

1. MariaDB InstallUpdate the server package1.2 phpMyAdmin InstallInstalled phpMyAdmin and configured it to operate MariaDB via web browser2. Wordpress Install2.1 Required library installation
2023.06.13
OpenSUSE15.5_en
OpenSUSE15.5_en

OpenSUSE15.5 : Clamav , Mail Server Install

1. Clamav ( anti-virus software )1.1 Clamav Install2.  Mail server Install2.1 Postfix Install①Install Postfix and build an SMTP server3. Mail Server: Postfix + Clamav + AmavisdSet up Postfix and Clamav to work together to scan incoming and outgoing mail in real time.
2023.06.12
OpenSUSE15.5_en
OpenSUSE15.5_en

OpenSUSE15.5 : WEB Server (Apache) Install

1. Web Server (Apache)1.1 apache2 Install2. Apache2 : Using Perl Scripts Configure Perl scripts to be used as CGI3. Apache2 : Virtual Host SettingsConfigure both domains sample1.korodes.com sample2.korodes.com to be displayed on one server4. Apache2 : Using PHP ScriptsInstall and configure PHP so that PHP scripts are available
2023.06.12
OpenSUSE15.5_en
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