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2023-01

Almalinux9.1_en

AlmaLinux 9.1 ; Logwatch , DiCe , Disk Usage Check Script

1. Logwatch ①Install # dnf install logwatch ②Edit configuration file 2. DiCE 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! 3.Introduce disk usage check script 3.1 Script Creation # cd /var/www/system # vi disk_capacity_check.sh
Almalinux9.1_en

AlmaLinux 9.1 ; WEB Server(Apache2) Install & Virtual Hosts

1.Apache2 Install , Virtual Host Configuration 1.1 Apache2 install ①httpd install # dnf -y install httpd 1.3 Virtual Host Settings Assign and configure the domain name [alma.korodes.com] to the document root [/var/www/html/alam.korodes.com] directory for virtual host operation 2. Use of CGI Scripts ①CGI availability check 3. PHP installation and configuration 1.PHP8 Install 4. 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 informa
OracleLinux9.1-en

OracleLinux9.1 : System Backup and Restore

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
OracleLinux9.1-en

OracleLinux9.1 : Suricata , SNORT Install

 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.
Almalinux9.1_en

AlmaLinux 9.1 ; Anti-virus(Clamav) , Mail Server

clamav (anti-virus software] Install 1.Clam AntiVirus install # dnf -y install clamav clamd clamav-update 2.Clam AntiVirus  Configuration File Edit Mail Server Install 1. Postfix 1.1 Install Install Postfix and build an SMTP server
Almalinux9.1_en

AlmaLinux 9.1 ; Mysql8 , WordPress Install

Mysql8 Install # dnf -y install mysql-server charset.cnf   Create a new one with the following contents WordPress Install 1. Create database for Word Press As an example, assume database [wp_db] database user [wp_user] password [?W123456]
Almalinux9.1_en

AlmaLinux 9.1 ; FTP Server , Samba FileServer Install

1.FTP Server 1. 1 Vsftpd Install # dnf -y install vsftpd 1.2 Configure Vsftpd Save the unedited vsftpd.conf with .bak 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 Editing
Almalinux9.1_en

AlmaLinux 9.1 ; SSL Certificate Acquisition( Let's Encrypt ) , Apache SSL , Mail SSL/TLS

1.Obtain an SSL certificate ( Let's Encrypt ) Install the latest open ssl # dnf install openssl-devel 1.1 advance preparation 1.Package management system Snappy installed 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 just in case # 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.
Almalinux9.1_en

AlmaLinux 9.1 ; Suricata , Tripwire , Chkrootkit

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 # dnf -y install epel-release 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
OracleLinux9.1-en

OracleLinux9.1 : Tripwire , Chkrootkit , Logwatch , Disk Usage Check Script

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