業務用エアコン関連の技術情報、エラーコード、環境問題対策に関する別サイト「エアコンの安全な修理・適切なフロン回収」

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fedora43_en

Fedora43 : SSH 、Firewalld

1.Configuring Remote Connections via SSHSSH is a service for...
fedora42_en

Fedora42 : SSH 、Firewalld

1.Remote connection by SSHSSH is a service for connecting re...
fedora43_en

Fedora43 : Initial Settings

1. Disabling SELinuxFirst, disable SELinux. SELinux is a fea...
fedora43_en

Fedora43 : OS Install

Fedora43 : Download (Released October 28, 2025)Please downlo...
OpenSUSE16.0_en

OpenSUSE16.0 : Clamav , Mail Server

1. ClamAV (antivirus software) implementation1.1 Install Cla...
OpenSUSE16.0_en

OpenSUSE16.0 : Obtain SSL Certificate (Let's Encrypt) 、Web / MAIL Server SSL

1.Obtain an SSL Certificate (Let's Encrypt)1.1 Preparation①E...
FreeBSD14.3_en

FreeBSD14.3 : OS Install

FreeBSDFreeBSD is UNIX-like open source OS software. In part...
OpenSUSE16.0_en

OpenSUSE16.0 : Tripwire , Logwatch

1. Tripwire1.1 Installation, Configuration① Add Repository➁I...
Debian13.1_en

Debian13.1 : System Backup & Restore

1. System Backup1.1 Backup under /var/www/html① Create backu...
Debian13.1_en

Debian13.1 : Nagios Server , Tripwire Install

Nagios ServerNagios is an open source monitoring solution ru...
Debian13.1_en

Debian13.1 : Suricata + Elastic Stack + Kibana

Prerequisite.We will install Suricata IDS and ElasticStack o...
Debian13.1_en

Debian13.1 : MariaDB , WordPress

1. MariaDB1.1 InstallMariaDB version confirmation1.2 MariaDB...
Debian13.1_en

Debian13.1 : Let's Encrypt, WEB/Mail Server SSL

1. Obtain a certificate (Let's Encrypt)1.1 advance preparati...
Debian13.1_en

Debian13.1 : Anti-virus(Clamav) , Mail Server

1. Antivirus software Clamav installedInstall Clam AntiVirus...
Debian13.1_en

Debian13.1 : FTP Server , NTP Server

1. Install NTP serverSetting ReflectionOperation check2.  In...