freebsd教程前　言第一步　安装系统第二步　接入Internet并配制代理服务第三步　安装配置web服务器第四步　安装配置ftp服务器第五步　安装配置E-mail服务器第六步　安装配置视频点播服务器-freebsd first step tutorial foreword second installation of the system and Internet access service agents preparation third step installation config