Installing SSL certificate in Apache

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Revision as of 07:24, 6 March 2022 by Saurabh (talk | contribs)

Home > CentOS > CentOS 6.x > Apache web server configuration > Installing SSL certificate in Apache

For installation of certificate in apache use following steps:

  1. Copy all (certificate, key, CA bundle) to /etc/httpd/conf folder
  2. chmod 400 ssl.key
  3. Edit /etc/httpd/conf.d/ssl.conf and replace appropriate values. Following three values need to be updated:
    SSLCertificateFile /etc/httpd/conf/ssl.pem
    SSLCertificateKeyFile /etc/httpd/conf/ssl.key
    SSLCACertificateFile /etc/httpd/conf/ca-bundle.pem
  4. Restart apache and verify that certificate is working as expected.


Securing Apache SSL configuration

Default SSL configuration of apache is vulnerable to many attacks. We can improve apache SSL configuration as follows:

  1. Edit /etc/httpd/conf/ssl.conf and replace/insert following two values
    SSLEngine on
    SSLProtocol all -SSLv2 -SSLv3 -TLSv1 -TLSv1.1
    SSLHonorCipherOrder on
    SSLCipherSuite "EECDH+ECDSA+AESGCM:EECDH+aRSA+AESGCM:EECDH+ECDSA+SHA384:EECDH+ECDSA+SHA256:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH+aRSA!RC4:EECDH:!RC4:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!SRP:!DSS"
    Header always set Strict-Transport-Security "max-age=31536000"
    In case of Virtualhost 'SSLEngine On' line is also required.
  2. Check ranking of HTTPS security using https://www.ssllabs.com/ssltest/index.html

Refer:



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