Basic hardening Apache 2.4.6 on Red Hat Enterprise Linux Server release 7.5 (Maipo)

Notes to self:

Installing packages and EPEL:

rpm -ivh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
yum -y install php php-gd php-mbstring httpd mod_security mod_evasive mod_ssl mariadb-server mariadb
sudo systemctl start httpd.service
sudo systemctl enable httpd.service
sudo systemctl start mariadb.service
sudo systemctl enable mariadb.service
sudo /usr/bin/mysql_secure_installation

Edit httpd.conf or .htaccess file to avoid hidden directories to be shown and redirect to https:

#avoid hidden directories to be shown
RedirectMatch 404 (?i)/\..+

#Redirect http to https
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

harden /etc/httpd/conf/httpd.conf and php.ini

sed -i -e 's/expose_php = On/expose_php = Off/' /etc/php.ini
ServerTokens Prod
ServerSignature Off
TraceEnable Off
FileEtag None
Header always unset X-Powered-By
Timeout 45

Options -Indexes -Includes

firewall-cmd --zone=public --add-service=http --permanent
firewall-cmd --zone=public --add-service=https --permanent

edit  /etc/httpd/conf.d/ssl.conf

<VirtualHost *:443>
    ...
    SSLEngine on
    SSLCertificateFile      /path/to/signed_certificate_followed_by_intermediate_certs
    SSLCertificateKeyFile   /path/to/private/key

    # Uncomment the following directive when using client certificate authentication
    #SSLCACertificateFile    /path/to/ca_certs_for_client_authentication


    # HSTS (mod_headers is required) (15768000 seconds = 6 months)
    Header always set Strict-Transport-Security "max-age=15768000"
    ...
</VirtualHost>

# modern configuration, tweak to your needs
SSLProtocol             all -SSLv3 -TLSv1 -TLSv1.1
SSLCipherSuite          ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256
SSLHonorCipherOrder     on
SSLCompression          off


# OCSP Stapling, only in httpd 2.3.3 and later
SSLUseStapling          on
SSLStaplingResponderTimeout 5
SSLStaplingReturnResponderErrors off
SSLStaplingCache        shmcb:/var/run/ocsp(128000

sudo systemctl start httpd.service