[Novalug] Basic security questions, NAT routers, LAMP

[John Christopher]

--- I wrote:

> I am also trying to learn web design and programming with LAMP
> (Linux, Apache, MySQL, and PHP), and I want to prevent the Apache
> and MySQL services from being visible to the world (I only want
> to be able to access them on my laptop).

Just to be clear, any websites or web apps I create will be
hosted on other machines, NEVER on my laptop.  The laptop is
for development only, so I don't want any services (Apache,
MySQL, or anything else) to be available to other computers.