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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

1. Server Backup1.1 Backup under /srv/www/①Create backup script file1.2. MariaDB Database Backup①Create backup script file2.1 Restore backup files under www① Save backup files used for restore to the "/ (root)" directory of the server2.2 Restore MariaDB data① Save the database backup file to any directoryExtract data

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 configuration① install2. chkrootkit インストールInstall a rootkit detection tool called chkrootkit to check whether a rootkit has been installed on the Linux server.①chkrootkit download,install3. Logwatchlogwatch is a software program that automatically analyzes logs and reports the results to support operations.

Create a private key for the client and a public key for the server to allow login with key pair authentication1.key pair creationCreate 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 creation destination and file name, id_ecdsa and id_ecdsa.pub will be created in /home/(user name)/.ssh/.On the way, also enter the password for the key.

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.4.virus scan script substitutionSet up a notification to a specified e-mail address after virus check scan.