apache

The easiest way to install apache, php and mysql in Mac is thru mac port. You can also install apache, php and mysql by compiling each of the service but it’s too time consuming. If you just wan to install apache, php and mysql for development use, Mac Port install is good enough.
Follow the steps [...]

To block certain ip address from accessing your website, just create a file with name .htaccess at your root directory with the content below:-

order allow,deny
deny from 192.168.0.1
allow from all

If you want to block multiple ip address using .htaccess simply add one ip address per line as below:-