[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