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设置NAT转发，ip_forward没设置1前，ping外网正常,设置ip_forward=1，马上ping不通外网，ping内网正常。\r\n\r\n网络设置如下：\r\n设置eth0的ip和添加路由信息，\r\n[root@bogon ~]# ifconfig eth0 1.1.1.12 netmask 255.0.0.0\r\n[root@bogon ~]# route add -net 1.0.0.0 netmask 255.0.0.0\r\n\r\n设置eth1的ip和添加路由信息，\r\n[root@bogon ~]# ifconfig eth1 192.168.1.111 netmask 255.255.255.0\r\n[root@bogon ~]# route add -net 192.168.1.0 net mask 255.255.255.0\r\n\r\n再添加一条缺省路由，\r\n[root@bogon ~]# route default gw 192.168.1.1\r\n\r\n然后再设置转发，\r\n网络就崩溃了。\r\n\r\n以下是一些配置和日志信息。\r\n\r\n| [root@bogon ~]# cat /proc/sys/net/ipv4/ip_forward\r\n0\r\n[root@bogon ~]#\r\n\r\n[root@bogon ~]# ping 1.1.1.202\r\nPING 1.1.1.202 (1.1.1.202) 56(84) bytes of data.\r\n64 bytes from 1.1.1.202: icmp_seq=1 ttl=128 time=0.552 ms\r\n64 bytes from 1.1.1.202: icmp_seq=2 ttl=128 time=0.483 ms\r\n\r\n[root@bogon ~]# ping 192.168.1.1\r\nPING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.\r\n64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.426 ms\r\n\r\n[root@bogon ~]# ping www.baidu.com\r\nPING www.a.shifen.com (202.108.22.5) 56(84) bytes of data.\r\n64 bytes from xd-22-5-a8.bta.net.cn (202.108.22.5): icmp_seq=1 ttl=52 time=12.1 ms\r\n\r\n\r\n[root@localhost ~]# cat /proc/sys/net/ipv4/ip_forward \r\n1\r\n[root@localhost ~]# \r\n[root@bogon ~]# ping 192.168.1.1\r\nPING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.\r\n64 bytes from 192.168.1.1: icmp_seq=92 ttl=64 time=0.420 ms\r\n\r\n--- 192.168.1.1 ping statistics ---\r\n116 packets transmitted, 10 received, 91% packet loss, time 114999ms\r\nrtt min/avg/max/mdev = 0.411/0.421/0.432/0.028 ms\r\n[root@bogon ~]# ping www.baidu.com\r\nPING www.a.shifen.com (202.108.22.141) 56(84) bytes of data.\r\n\r\n--- www.a.shifen.com ping statistics ---\r\n15 packets transmitted, 0 received, 100% packet loss, time 13999ms\r\n\r\n[root@bogon ~]# |
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免费注册
发表于 2009-12-28 11:13
发表于 2009-12-28 20:20
发表于 2009-12-28 21:14
