nuy | Page 27 | Linux Server Construction

RockyLinux 9.1 ; FTP Server , Samba File Server

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

2022.11.09

Rocky Linux9.1_en

RockyLinux 9.1 ; SSH、firewalld 、NTP Server

1.Remote connection via SSH SSH is a service for connecting remotely to a server and is basically running immediately after the OS is installed, but the default settings are somewhat insecure. Here we will configure the default settings to increase the security of ssh connections. 1.1 Edit SSH service configuration file Modify the configuration file to change the SSH service settings. The SSH service configuration file is "/etc/ssh/sshd_config". 2.Firewall (firewalld) settings The firewall is set to firewalld as default and is enabled during OS installation. 4.NTP Server Build an NTP server to synchronize the server time with Japan Standard Time

2022.11.08

Rocky Linux9.1_en

AlmaLinux 9.1 ; System Backup and Restore

1.Website data backup 1-1.Backup under /var/www/html ①Create backup script file # cd /var/www/system # vi backup_html.sh 2.MySQL database backup ①Create backup script file # cd /var/www/system # vi db_my_backup.sh 3.Restore backup files under html ①Store HTML backup files in "/ (root)" directory 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

2022.10.31

Almalinux9.1_en

AlmaLinux 9.1 ; SSH、Firewalld、NTP Server

1.SSH remote connection SSH is a service for connecting remotely to a server and is basically running immediately after the OS is installed, but the default settings are somewhat insecure. Here we will configure the default settings to increase the security of ssh connections. 1.1 SSH service configuration file changes 2.How to set up a firewall (firewalld) In AlmaLinux, the firewall is set to firewalld by default and is enabled during OS installation. 4.NTP Server Build an NTP server to synchronize the server time with Japan Standard Time

2022.11.23

Almalinux9.1_en

AlmaLinux 9.1 ; Authenticated SSH connection with key pair

SSH connection with authentication using public key cryptography Create 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 must be done as a user with remote login privileges. If you do not specify the destination and file name, id_ed25519 and id_eed25519.pub will be created in /home/(user name)/.ssh/. On the way, enter the password for the key.

2022.11.23

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

2023.01.16

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.

2023.01.04

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

2023.01.04

Almalinux9.1_en

RHEL9.x compatible Linux : Zabbix6

Open source integrated monitoring software "Zabbix" Zabbix is an open source integrated monitoring software for centralized monitoring of servers, networks and applications. It provides monitoring, fault detection and notification functions required for integrated monitoring. With Zabbix agent and SNMP support for many platforms, you can monitor your entire system with a single Zabbix. To run Zabbix, you will need the PHP programming language, MySQL as a database server, and a web server such as Apache or Nginx. In this article, we will assume that all of these have already been configured. SELinux must be set to permissive

2022.11.01

Almalinux9.1_enRocky Linux9.1_en

OracleLinux9.1 : OS Install

OracleLinux9.1 Oracle Linux provides a 100% application binary compatible alternative to Red Hat Enterprise Linux and CentOS Linux for both hybrid and multi-cloud environments. Since 2006, Oracle Linux has been completely free to download and use. Source code, binaries and updates are provided free of charge. It is freely redistributable. Free for use in production environments. This time, we will proceed with the latest Oracle Linux 9.1.

2022.12.27

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

2023.01.02

OracleLinux9.1-en

OracleLinux9.1 : SSH connection with SSH key pair

SSH connection with authentication using public key Creation of public and private key pairs Create 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 destination and file name, id_ed25519 and id_ed25519.pub will be created in /home/(user name)/.ssh/. On the way, enter the password for the key.

2022.12.28

OracleLinux9.1-en

Rocky Linux8.6 : FTP Server

Install FTP Server 1. Instaa Vsftpd # dnf -y install vsftpd 2.Vsftpd configuration

2022.06.08

Rocky Linux8.6 Building a server

AlmaLinux 8.6 : FTP Server Install

FTP Server Installation 1. Vsftpd Install # dnf -y install vsftpd 2.Vsftpd configuration Save the unedited vsftpd.conf with .bak # cp /etc/vsftpd/vsftpd.conf /home/huong/vsftpd.conf.bak

2022.06.21

Almalinux8.6 Building a server

MiracleLinux9.0 : OS Install

MiracleLinux MIRACLE LINUX is a Japanese Linux distribution provided by Cybertrust Corporation. Miracle Linux (now Cybertrust), established by Oracle Japan and NEC in June 2000, began development of Oracle Database for business and enterprise use with the aim of ensuring stable operation. It has been based on RHEL since Version 2.0 released in May 2001, and has been a full RHEL clone since Version 6.0 released in January 2012, with the latest version being 8.4 as of December 2021. MIRACLE LINUX, the famous domestic RHEL clone, was initially a commercial OS with a paid license, but following the termination of CnetOS8, it was announced that it would be offered free of charge starting with the latest 8.4. The current distribution is Red Hat Enterprise Linux (RHEL) 9 compatible with the latest version 9.0 released on November 1, 2022. Like RHEL9, MIRACLE LINUX 9 is based on Linux kernel 5.14. In addition to version upgrades to major packages such as OpenSSL, MIRACLE LINUX 9 offers mainly enhanced security-related features such as improved SELinux performance and secure boot support. Package updates and security patches will be provided free of charge until November 2032.

2022.11.14

miracle9.0_en