Ubuntu Server: Restrict Apache Information Leakage.

• Edit the Apache2 configuration security file :

sudo vi /etc/apache2/conf.d/security

• Add or edit the following lines and save :

ServerTokens Prod
ServerSignature Off
TraceEnable Off
Header unset ETag
FileETag None

• Restart Apache server. Open a Terminal and enter the following :

sudo /etc/init.d/apache2 restart