linux下ping不通网关

sunchj2001

FC4下不能上网,请高手帮忙分析一下,小弟我感激不敬.



在终端运行命令显示结果如下,供大家参考.

route

Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
169.254.0.0 * 255.255.0.0 U 0 0 0 eth0
default 192.168.0.1 0.0.0.0 UG 0 0 0 eth0


ifconfig

eth0 Link encap:Ethernet HWaddr 00:C0:9F:97:B7F
inet addr:192.168.0.151 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::2c0:9fff:fe97:b7df/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:46 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:3 Base address:0x1800

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:1875 errors:0 dropped:0 overruns:0 frame:0
TX packets:1875 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2329816 (2.2 MiB) TX bytes:2329816 (2.2 MiB)




iptable -L -n -v

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
0 0 RH-Firewall-1-INPUT all -- * * 0.0.0.0/0 0.0.0.0/0

Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
1342 1776K RH-Firewall-1-INPUT all -- * * 0.0.0.0/0 0.0.0.0/0

Chain OUTPUT (policy ACCEPT 1359 packets, 1778K bytes)
pkts bytes target prot opt in out source destination

Chain RH-Firewall-1-INPUT (2 references)
pkts bytes target prot opt in out source destination
1331 1775K ACCEPT all -- lo * 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT icmp -- * * 0.0.0.0/0 0.0.0.0/0 icmp type 255
0 0 ACCEPT esp -- * * 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT ah -- * * 0.0.0.0/0 0.0.0.0/0
11 1119 ACCEPT udp -- * * 0.0.0.0/0 224.0.0.251 udp dpt:5353
0 0 ACCEPT udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpt:631
0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22
0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:80
0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:21
0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:25
0 0 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited


请高手帮忙分析一下,什么问题,还需要显示什么,请跟我说!谢谢!

platinum

iptables -F FORWARD
service iptables save
chkconfig iptables on

try again ?

sunchj2001

谢谢,我等会看一下

sunchj2001

我试还是ping不出去

platinum

service iptables stop
这样一定可以

sunchj2001

感谢楼上的朋友热心帮助，可依旧还是不行！
#dmesg | grep eth0
结果如下：
NETDEV WATCHDOG：eth0 transmit timed out
eth0 :Transmit timeout,status 00000000 00000260
...........

sunchj2001

# lspci -v
关于网卡的信息
....
00：04.0 Ethernet controller:Silicon Integrated Systems [SIS] SIS900 PCI Fast Etgernet (rev 91)
               Subsystem :Acer Incorporate [ALl]:Unknown device 0083
               Flags :bus master,medium devsel ,latency 173 ,IRQ 3
               I/O ports at 1800 [size=256]
               Memory at e2003000(32-bit ,non-prefetchable) [size=4k]
Capabilities:[40] Power Management version 2
....

sunchj2001

发布以上信息！供大家参考！

platinum

看来不仅防火墙有问题，网卡或者驱动程序还有问题
换成 Realtek-8139 网卡应该就没事了

sunchj2001

是网卡驱动有问题吗？为什么我能ping 通自己啊？！