First of all, check security your web server on this page

SSL Server Test

After that you can start fix your security problems.

To mitigate this vulnerability as it affects httpd using mod_ssl, set the SSLProtocol directive as follows in /etc/httpd/conf.d/ssl.conf:

Note: This directive must either be located at the topmost level of the configuration file, or inside the default virtual host configuration for an address.

SSLProtocol All -SSLv2 -SSLv3

Then restart httpd:

# service httpd restart

On Red Hat Enterprise Linux 7 or Red Hat Enterprise Linux 6.6 and later:

SSLProtocol -All +TLSv1 +TLSv1.1 +TLSv1.2

On other platforms, including Red Hat Enterprise Linux 5

SSLProtocol -All +TLSv1

Then restart httpd:

# service httpd restart