jestli chces, aby se na nej nikdo nepripojil, mas 2 moznosti:
1. nakonfigurovat si firewall (firehol atd pokud nechces nastavovat iptables primo)
2. nebo v souboru /etc/apache2/ports.conf dopsat Listen 127.0.0.1:80, cili bude to vypadat takto:
# If you just change the port or add more ports here, you will likely also
# have to change the VirtualHost statement in
# /etc/apache2/sites-enabled/000-default
# This is also true if you have upgraded from before 2.2.9-3 (i.e. from
# Debian etch). See /usr/share/doc/apache2.2-common/NEWS.Debian.gz and
# README.Debian.gz
NameVirtualHost *:80
Listen 127.0.0.1:80
<IfModule mod_ssl.c>
# If you add NameVirtualHost *:443 here, you will also have to change
# the VirtualHost statement in /etc/apache2/sites-available/default-ssl
# to <VirtualHost *:443>
# Server Name Indication for SSL named virtual hosts is currently not
# supported by MSIE on Windows XP.
Listen 443
</IfModule>
<IfModule mod_gnutls.c>
Listen 443
</IfModule>
po teto zmene restartuj apache a nikdo by se na nej zvenku nemel pripojit.
naprosto idealni je zapojit obe reseni, tj nastavit si firewall i apache