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	<title>openSUSE_15.3_en | Linux Server Construction</title>
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	<title>openSUSE_15.3_en | Linux Server Construction</title>
	<link>https://korodes.com</link>
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	<item>
		<title>OpenSUSE15.3    ;   Server Backup and Restore</title>
		<link>https://korodes.com/en/suse15-3_en_12/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Wed, 19 Jan 2022 07:12:31 +0000</pubDate>
				<category><![CDATA[openSUSE_15.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=9161</guid>

					<description><![CDATA[1. Server Backup
1.1 Backup under /srv/www/

①Create a backup script file

# cd /srv/www/system/
# vi backup_all.sh
1.2. MySQL database backup

①Create a backup script file

# cd /srv/www/system
# vi db_my_backup.sh
Contents of db_my_backup.sh
2.Restoring Data
2.1 Restore the backup files under /srv/www/
① Save the backup file used for the restore to the server's "/ (root)" directory.
2.2 Restore MySQL data
① Save the database backup file to a directory of your choice.、
（In the example, the directory is "/srv/www/backup/db_bak".）Unzip the data]]></description>
		
		
		
			</item>
		<item>
		<title>OpenSUSE15.3   ;   Tripwire  Chkrootkit  Logwatch  DiCE</title>
		<link>https://korodes.com/en/suse15-3_en_11/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Tue, 18 Jan 2022 06:36:45 +0000</pubDate>
				<category><![CDATA[openSUSE_15.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=9167</guid>

					<description><![CDATA[1. Tripwire Install

Tripwire is a host-based intrusion detection system (IDS) that monitors files and directories and notifies the user of any changes.

1.1 Installation and configuration

① Download and install
2. Chkrootkit Install

①Download and install chkrootkit
3. Logwatch Install
① Install
# zypper -n install logwatch
② Edit the configuration file
4. DiCE  Install
Every time the global IP is changed, which happens when the Internet is disconnected or the router is disconnected and rebooted, the dynamic DNS must be accessed to notify the change in global IP.
DiCE does that work for you automatically.]]></description>
		
		
		
			</item>
		<item>
		<title>OpenSUSE15.3 :  Let&#039;s Encrypt &#038; Web Server SSL</title>
		<link>https://korodes.com/en/suse15-3_en_10/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Mon, 17 Jan 2022 07:25:14 +0000</pubDate>
				<category><![CDATA[openSUSE_15.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=5662</guid>

					<description><![CDATA[1.Obtaining an SSL Certificate (Let's Encrypt)

Pre-assignment
Enable mod_ssl

# a2enmod ssl
1.1 Install the certificate
# zypper -n install certbot
# certbot certonly --webroot -w /srv/www/htdocs/[Web site directory] -d  [Domain name]
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator webroot, Installer None
# First time only, you need to register your email address and agree to the terms o]]></description>
		
		
		
			</item>
		<item>
		<title>OpenSUSE15.3  : SNORT</title>
		<link>https://korodes.com/en/suse15-3_en_09/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sun, 16 Jan 2022 12:39:01 +0000</pubDate>
				<category><![CDATA[openSUSE_15.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=9176</guid>

					<description><![CDATA[1.SNORT Install

Snort is a network-type IDS (intrusion detection system). It captures packets flowing on the network and detects suspicious packets.
The source file is used directly from https://snort.org/.

1.1 advance preparation

Install the required libraries

# zypper install wget bison flex libfl2 gcc libpcap-devel libpcap-devel-32bit libpcap1 automake libtool make glibc-devel-32bit zlib-devel zlib-devel-32bit libWN3 libdnet-devel libdnet1 efl efl-lang elua libXvMC1 libecore1 libector1 libedje1 libeet1 libpcrecpp0 libstdc++-devel libstdc++6-devel-gcc7 pcre-devel ethtool net-tools-deprecated net-tools net-tools-lang libopenssl-1_1-devel libtirpc-devel moonjit moonjit-devel
1.2 SNORT and daq download and installation]]></description>
		
		
		
			</item>
		<item>
		<title>OpenSUSE15.3  :  Mysql  &#038;  WordPress</title>
		<link>https://korodes.com/en/suse15-3_en_08/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sun, 16 Jan 2022 06:48:29 +0000</pubDate>
				<category><![CDATA[openSUSE_15.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=9183</guid>

					<description><![CDATA[1. Install Mysql8

First, make sure the server is up to date.

Update the server package


# zypper ref
# zypper up -y 
1.2 Example of creating  Mysql8 database and user
Try to create a user, password, and database for wordpress to install in the following
database　:　 wp_db
user　:　wp_user
password　:　?WHxx333Yo
2. Install Wordpress
2.1 Install required libraries
# zypper install php-gd php-pdo php-mysql php-mbstr]]></description>
		
		
		
			</item>
		<item>
		<title>OpenSUSE15.3  :  Clamav (anti-virus) , Mail Server</title>
		<link>https://korodes.com/en/suse15-3_en_07/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sat, 15 Jan 2022 13:09:09 +0000</pubDate>
				<category><![CDATA[openSUSE_15.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=5626</guid>

					<description><![CDATA[1. Install clamav (anti-virus software)
1.1 Install Clamav

# zypper -n install clamav

1.2 Virus definition file update

①Virus definition file update setting

# vi /etc/freshclam.conf
■Line 71.
Insert "#" at the beginning of the line "DatabaseMirror database.clamav.net".し、
"DatabaseMirror db.jp.clamav.net" added.
#DatabaseMirror database.clamav.net
DatabaseMirror db.jp.clamav.net]]></description>
		
		
		
			</item>
		<item>
		<title>OpenSUSE15.3   :  Web server Apache  Install</title>
		<link>https://korodes.com/en/suse15-3_en_06/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sat, 15 Jan 2022 02:32:36 +0000</pubDate>
				<category><![CDATA[openSUSE_15.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=9193</guid>

					<description><![CDATA[1. Install Web server Apache
1.1Install apache2 ( httpd-2.4.43 )
# zypper -n install apache2
1.2 Apache2 : Basic Configuration
2. Apache2 : Use Perl scripts.

Configure Perl scripts to be used as CGI

2.1 Install Perl

①Install

# zypper -n install perl
3. Apache2 : Virtual Host Configuration

Configure both domains sample1.korodes.com sample2.korodes.com to be displayed on a single server
4. Apache2 : Use PHP scripts

Install PHP and configure it so that PHP scripts can be used]]></description>
		
		
		
			</item>
		<item>
		<title>OpenSUSE15.3   :   FTP over SSL/TLS</title>
		<link>https://korodes.com/en/suse15-3_en_05/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Sat, 15 Jan 2022 01:19:22 +0000</pubDate>
				<category><![CDATA[openSUSE_15.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=5602</guid>

					<description><![CDATA[1. vsftpd (FTP server installation)
1.1 Install vsftpd

It is already installed when you install openSUSE.
If it is not installed, you can install it with the following command

# zypper -n install vsftpd
1.2 Edit vsftpd configuration file
Save the unedited vsftpd.conf with .bak.]]></description>
		
		
		
			</item>
		<item>
		<title>OpenSUSE15.3 : SSH connection with authentication using public key cryptography</title>
		<link>https://korodes.com/en/suse15-3_en_04/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Fri, 14 Jan 2022 02:59:43 +0000</pubDate>
				<category><![CDATA[openSUSE_15.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=9202</guid>

					<description><![CDATA[Create a private key for the client and a public key for the server so that the client can log in using the key pair authentication.

1.Key pair creation

Create a pair of public and private keys for the user who will connect to the Linux server using OpenSSH.
To create a key pair, use ssh-keygen.
The creation of a public/private key pair should be performed as a user with remote login privileges.
If you do not specify the destination and file name, id_ecdsa and id_ecdsa.pub will be created in /home/(user name)/.ssh/.    On the way, you will also enter the password for the key.]]></description>
		
		
		
			</item>
		<item>
		<title>OpenSUSE15.3  :  Firewall  ,  SSH、NTP</title>
		<link>https://korodes.com/en/suse15-3-en_03/</link>
		
		<dc:creator><![CDATA[nuy]]></dc:creator>
		<pubDate>Thu, 13 Jan 2022 11:33:48 +0000</pubDate>
				<category><![CDATA[openSUSE_15.3_en]]></category>
		<guid isPermaLink="false">https://korodes.com/?p=5585</guid>

					<description><![CDATA[1.Setting up a remote connection using SSH

SSH is a service to connect to a server remotely, basically running right after the OS installation, but the default settings are somewhat insecure.
Configure settings to increase the security of ssh connections.

1.1 Change the configuration file of SSH service.

The configuration file for the SSH service is "/etc/ssh/sshd_config".]]></description>
		
		
		
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