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