CentOS 7
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Configure SSL/TLS
2014/07/23
 
Configure SSL/TLS to use secure encrypt HTTP connection.
[1]
[2] Configure httpd for SSL/TLS.
[root@www ~]#
yum -y install mod_ssl
[root@www ~]#
vi /etc/httpd/conf.d/ssl.conf
# line 59: uncomment

DocumentRoot "/var/www/html"
# line 60: uncomment and specify the server name

ServerName
www.srv.world:443
# line 75: change

SSLProtocol
-All +TLSv1 +TLSv1.1 +TLSv1.2
# line 100: change to the one got in [1]

SSLCertificateFile
/etc/letsencrypt/live/www.srv.world/cert.pem
# line 107: change to the one got in [1]

SSLCertificateKeyFile
/etc/letsencrypt/live/www.srv.world/privkey.pem
# line 116: change to the one got in [1]

SSLCertificateChainFile
/etc/letsencrypt/live/www.srv.world/chain.pem
[root@www ~]#
systemctl restart httpd

[3] If you'd like to set HTTP connection to redirect to HTTPS (Always on SSL/TLS), configure each Virtualhost like follows.
It's OK to set it in [.htaccess] not in httpd.conf.
[root@www ~]#
vi /etc/httpd/conf.d/vhost.conf
<VirtualHost *:80>
    DocumentRoot /var/www/html
    ServerName www.srv.world
    RewriteEngine On
    RewriteCond %{HTTPS} off
    RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
</VirtualHost>

[root@www ~]#
systemctl restart httpd

[4] If Firewalld is running, allow HTTPS service. HTTPS uses 443/TCP.
[root@www ~]#
firewall-cmd --add-service=https --permanent

success
[root@www ~]#
firewall-cmd --reload

success
[5] Verify possible accessing or not with HTTPS from any Client Computer.
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