This might sound like a dumb question, but I don't know much about
security.

I installed Apache on my Windows XP computer in order to test my PHP
web files locally before uploading to the web server. I'm worried about
my computer being more vulnerable to attack now that I am running a web
server. Is there a way to configure Apache so that I can only use it to
display webpages locally on my machine, but disallow remote users from
accessing the webserver?

Thank you.