安裝了centos6.5虛擬機,使用的是橋接方式。把全部的配置已經寫到/etc/sysconfig/network-scripts/ifcfg-eth0中後,發現內網能夠ping通,外網卻沒法訪問。html
ping了一下dns的ip也是不通的。最後按照一篇文章的說明,設置了默認網關後訪問外網正常了。centos
個人ifcfg-eth0配置文件以下:this
DEVICE=eth0 NM_CONTROLLED=yes TYPE=Ethernet BOOTPROTO=static IPADDR=192.168.1.103 NETMASK=255.255.255.0 # If you're having problems with gated making 127.0.0.0/8 a martian, # you can change this to something else (255.255.255.255, for example) BROADCAST=127.255.255.255 ONBOOT=yes NAME=systemeth0 DNS1=114.114.114.114 DNS2=192.168.1.1 GETWAY=192.168.1.1 DEFROUTE=yes NETWORKING=yes
設置默認網關的命令:spa
route add default gw 192.168.1.1 dev eth0
參考連接:.net
http://www.jb51.net/os/RedHat/156067.htmlcode