请进行如下操作： [root@localhost Desktop]# service network restart Shutting down interface eth0: Error: Device \'eth0\' (/org/freedesktop/NetworkManager/Devices/0) disconnecting failed: This device is not active [FAILED] Shutting down loopback interface: [ OK ] Bringing up loopback interface: [ OK ] Bringing up interface eth0: Error: Connection activation failed: Device not managed by NetworkManager or unavailable [FAILED] [root@localhost Desktop]# chkconfig NetworkManager off [root@localhost Desktop]# chkconfig network on [root@localhost Desktop]# service NetworkManager stop Stopping NetworkManager daemon: [ OK ] [root@localhost Desktop]# service network start Bringing up loopback interface: [ OK ] Bringing up interface eth0: [ OK ] RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists [root@localhost Desktop]# service network restart Shutting down interface eth0: [ OK ] Shutting down loopback interface: [ OK ] Bringing up loopback interface: [ OK ] Bringing up interface eth0: [ OK ] [root@localhost Desktop]# ifconfig eth0 Link encap:Ethernet HWaddr 00:0C:29:A0:C6:44 inet addr:192.168.1.189 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:12 errors:0 dropped:0 overruns:0 frame:0 TX packets:12 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:720 (720.0 b) TX bytes:720 (720.0 b) [root@localhost Desktop]# iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED ACCEPT icmp -- anywhere anywhere ACCEPT all -- anywhere anywhere ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:ssh REJECT all -- anywhere anywhere reject-with icmp-host-prohibited Chain FORWARD (policy ACCEPT) target prot opt source destination REJECT all -- anywhere anywhere reject-with icmp-host-prohibited Chain OUTPUT (policy ACCEPT) target prot opt source destination [root@localhost Desktop]# iptables -F
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