linux 代理服务器网络设置的问题

hyndh

linux2.6系统：
eth0:
ip:192.168.0.254          内网ip
netmask:255.255.255.0     
这块网卡作为内网网关允许192.168.0.*网段内的机器通过eth1访问外网
eth1:
ip:203.207.224.109        外网ip
netmask:255.255.255.192
gateway:203.207.224.97    外网网关

现已经用vi /etc/sysconfig/network-scripts/ifcfg-eth0和eth1 配置过两块网卡，网卡启动后输入
etc/rc.d/init.d/network start，用ifconfig 可以看见eth0、eth1、lo;两块网卡都有流量
但ping      192.168.0.254    好半天才得到：
64 bytes from 192.168.0.254:icmp_seq=0 ttl=255 time=0.2ms
64 bytes from 192.168.0.254:icmp_seq=0 ttl=255 time=7400.2ms
64 bytes from 192.168.0.254:icmp_seq=0 ttl=255 time=148000.2ms
64 bytes from 192.168.0.254:icmp_seq=0 ttl=255 time=222000.2ms
64 bytes from 192.168.0.254:icmp_seq=0 ttl=255 time=296000.2ms
64 bytes from 192.168.0.254:icmp_seq=0 ttl=255 time=370000.2ms...
  ping      203.207.224.97   好半天才得到：
From 203.207.224.97acket filtered
From 203.207.224.97acket filtered
From 203.207.224.97acket filtered
From 203.207.224.97acket filtered...
请问接下来该如何操作，问题出在哪里? 谢谢.