首先確定已經(jīng)連接上路由器，并且路由器能夠訪問外網(wǎng)，可以通過訪問網(wǎng)關(guān)進行確定
[root@localhost ~]# ping 192.168.1.1PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=2.96 ms64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=1.75 ms
如果確定網(wǎng)絡(luò)沒問題的情況下, 可以通過如下步驟尋找解決辦法: 1) 確定設(shè)置了域名服務(wù)器, 沒有的話, 建議設(shè)置Google的公共DNS服務(wù), 它應(yīng)該不會出問題的 [root@localhost ~]# cat /etc/resolv.confsearch localdomain
因為我的DNS沒有設(shè)置所以導(dǎo)致了ping外網(wǎng)ping不通。將dns添加到該文件中
[root@localhost ~]# vi /etc/resolv.conf
search localdomainnameserver 202.96.128.86nameserver 202.96.128.143
2) 確保網(wǎng)關(guān)已設(shè)置 # grep GATEWAY /etc/sysconfig/network-scripts/ifcfg* ------------------------------------------------------------------- /etc/sysconfig/network-scripts/ifcfg-eth0:GATEWAY=192.168.10.1 ------------------------------------------------------------------- 如果未設(shè)置, 則通過如下方式增加網(wǎng)關(guān): # route add default gw 192.168.10.1 或者手工編寫/etc/sysconfig/network-scripts/ifcfg*文件后, 重啟network服務(wù): # service network restart 3) 確保可用dns解析 # grep hosts /etc/nsswitch.conf ------------------------------------------------------------------- hosts: files dns ------------------------------------------------------------------- 如果以上哪個有問題, 修正后, 再測試, 應(yīng)該就沒問題了: #ping -c 3 www.baidu.com PING www.a.shifen.com (220.181.6.175) 56(84) bytes of data. 64 bytes from 220.181.6.175: icmp_seq=0 ttl=50 time=9.51 ms 64 bytes from 220.181.6.175: icmp_seq=1 ttl=50 time=8.45 ms 64 bytes from 220.181.6.175: icmp_seq=2 ttl=50 time=8.97 ms --- www.a.shifen.com ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2002ms rtt min/avg/max/mdev = 8.450/8.977/9.511/0.446 ms, pipe 2 --End--新聞熱點
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