Ubuntu25.04_en Ubuntu Server25.04 : Initial settings after OS installation
1. Set root password and use SU commandIn the default config...
nuy
Ubuntu25.04_en 
Almalinux9.4_en AlmaLinux9.4 : OS Install , Various settings
1.AlmaLinux 9.4AlmaLinux OS is a project launched by CloudLinux in the US as an alternative to CentOS. Currently, the AlmaLinux OS Foundation is the development parent organization.Following the general availability of Red Hat Enterprise Linux 9.0, AlmaLinux 9.0 was released on May 26, 2022.Like Red Hat Enterprise Linux 9, AlmaLinux 9 utilizes the same package versions as the Linux 5.14 kernel, GCC 11, Python 3.9, and RHEL9.Cockpit web management interface, enhanced kernel live patching, improved container and cloud integration, OpenSSL 3, and other security improvements.This time we will install AlmaLinux 9.4 with a minor upgrade on May 4, 2024.1.1 AlmaLinux 9.4 DownloadFor the AlmaLinux 9.4 installation image, go to the following site and download "AlmaLinux-9.4-x86_64-dvd.iso".https://ftp.jaist.ac.jp/pub/Linux/almalinux/9.4/isos/x86_64/
Rocky Linux9.4_en Rocky Linux9.4 : 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-devel1.1 advance preparation1.Package management system Snappy installedSince 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 just in case# 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.
Slackware 15.0_en Slackware15.0 : Installing packages
Installing packagesSelect installation media and other insta...
OracleLinux10.0_en OracleLinux10.0 : MariaDB , WordPress
MariaDB InstallMariaDBl Version CheckUse the "mariadb_secure...
OracleLinux10.0_en OracleLinux10.0 : SSH Remote connection , Firewalld , NTP Server
1.Setting up a remote connection via SSHSSH is a service for...
OracleLinux10.0_en OracleLinux10.0 : Initialization
Initial setup after installation1.Install bash completion ex...
OracleLinux10.0_en OracleLinux10.0 : Tripwire , Chkrootkit , DNS update Script , Logwatch , Disk Usage Check Script
Tripwire1.Download and installationI couldn't find it in the...
OracleLinux10.0_en OracleLinux10.0 : SNORT3 Install
SNORT3Snort is an open source network intrusion detection sy...
Rocky Linux10.0_en Rocky Linux10.0 : Various settings
1. Disabling SELinuxFirst, disable selinux. selinux is a fea...
FreeBSD14.3_en FreeBSD14.3 : Postfix ClamAV + Amavis + SpamassAssin
Install ClamAV on FreeBSD 14.3 and link it with Amavis again...
FreeBSD14.3_en FreeBSD14.3 : Mail Server SSL/TLS
1. Obtaining a certificate for the mail serverObtain a certi...
Debian13.1_en Debian13.1 : WEB Server(Apache)
Web server Apache2 installationAllow http:80 port in UFW bef...
Debian13.1_en Debian13.1 : Initial Settings
Installing and Configuring the Vim EditorDebian sets "nano" ...
Debian10.13_en Debian10.13 ; OS Install
1.Download the .Debian10.13 installation imageDownload site ...