安装：sudo apt-get install apache2再启动：sudo service apache2 restart
查看版本号：apache2 -v
测试http/ftp: wget ip:port
探测端口是否开放： telnet ip port
修改监听端口：
a）/etc/apache2/ports.conf
Listen port
b) /etc/apache2/apache2.conf
<Directory /var/www/>Options Indexes FollowSymLinks MultiViews
AllowOverride All
Order allow,deny
allow from all
</Directory>