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Fedora39 ; Logwatch , Disk Usage Check Script

Fedora39 ; Download (Released on Nov 07, 2023) Fedora39 can be downloaded from the following mirror siteshttps://ftp.riken.jp/Linux/fedora/releases/39/Server/x86_64/iso/ The file to download is the "Fedora-Server-dvd-x86_64-39-1.5.iso" image Create an installation disk from the downloaded "Fedora-Server-dvd-x86_64-39-1.5.iso" image on a USB disk and install it on the actual device.

1.FTP Server Installation 1. 1 vsftpd Install 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 Encrypt. 3. File server installation with Samba Build a file server with access rights that requires user authentication with Samba. Installation Procedure ① Create shared folders with access rights that require user authentication ②Creation of accessible groups ③Creation of users belonging to groups that can be accessed ④Configuration File Editing

Clamav (anti-virus software)Install 1.Clamav 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 2.Dovecot 2.1 dovecot install # dnf -y install dovecot 2.2 Edit dovecot.conf file Mail Server : Postfix + Clamav + Amavisd+SpamAssassin 1.Real-time scanning of e-mails ①Install Amavisd and Clamav Server

SNORT 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. 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.Website data backup Backup under /var/www/html ①Create backup script file 2.MySQL database backup ①Create backup script file 3.Web configuration file (under html) restored ① Copy the HTML backup file to the "/ (root)" directory of the server to be used for restoration 4.Restore MySQL data ①Save database backup file to any directory

1.Website data backup Backup under /var/www/html ①Create backup script file 2.MySQL database backup ①Create backup script file 3.Web configuration file (under html) restored ① Copy the HTML backup file to the "/ (root)" directory of the server to be used for restoration 4.Restore MySQL data ①Save database backup file to any directory

Fedora38 ; Logwatch , Disk Usage Check Script

Clamav ( anti-virus software ) 1.Clam AntiVirus Install 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 ①Amavisd ,Clamav Server Install

Apache2 installation and virtual host configuration 1.Apache2 Install Digest authentication in Apache2 Since Basic Authentication, a well-known authentication authentication method for http, transmits 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 the authentication information and sends it in encrypted form, so there is almost no risk of information leakage. ①httpd Install 3.Virtual Host Settings Assign and configure the [FQDN] to be operated on the virtual host in the document root [/var/www/html/FQDN] directory PHP installation and configuration 1.PHP Install

1.FTP Server Installation 1. 1 vsftpd Install 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 Encrypt. 3. File server installation with Samba Build a file server with access rights that requires user authentication with Samba. Installation Procedure ① Create shared folders with access rights that require user authentication ②Creation of accessible groups ③Creation of users belonging to groups that can be accessed ④Configuration File Editing

1.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 the key pair. The creation of a public/private key pair is performed with the authority of the user logging in remotely. If you do not specify the creation destination and file name, id_ed25519 and id_ed25519.pub will be created in /home/(user name)/.ssh/. On the way, also enter the password for the key.

1.Remote connection by SSH SSH is a service for connecting remotely to a server, basically running immediately after OS installation, but the default settings are somewhat insecure. Configure the default settings to increase the security of ssh connections. 1.1 SSH service configuration file changes The SSH service configuration file is "/etc/ssh/sshd_config". Open the configuration file in a vi editor.

1. SELinux Disable 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 configuration considerably. Therefore, it is basically invalidated in many cases. You can disable it by doing the following。