wei 于 2010-08-03 21:46(14 年以前) 发表:
每次重启完服务器都要重新做以下步骤，否则不能上网。为什么呢？
iptables -t nat -A POSTROUTING -s 10.8.8.0/24 -o eth0 -j SNAT --to-source x.x.x.x
/etc/init.d/iptables save
/etc/init.d/iptables restart
不同的机器，-o eth0 参数可能不一样，具体可输入 ifconfig 查看，搞清 ip(70.8.7.6)所在的网卡号.
同时, 需要将 ip forward 打开. 不要用 echo 1 > /proc/sys/net/ipv4/ip_forward 的方式, 这种方式重启后无效. 先查看一下:
代码:
sysctl -a | grep for
#查看结果:
net.ipv4.conf.tun0.mc_forwarding = 0
net.ipv4.conf.tun0.forwarding = 1
net.ipv4.conf.eth0.mc_forwarding = 0
net.ipv4.conf.eth0.forwarding = 1
net.ipv4.conf.lo.mc_forwarding = 0
net.ipv4.conf.lo.forwarding = 1
net.ipv4.conf.default.mc_forwarding = 0
net.ipv4.conf.default.forwarding = 1
net.ipv4.conf.all.mc_forwarding = 0
net.ipv4.conf.all.forwarding = 1
net.ipv4.ip_forward = 1
如果你的主机上列数值不是为1, 则要将其改成1, 例如:
代码:
sysctl -w net.ipv4.ip_forward=1
每次重启完，所有的 net.ipv4.xxxx 都 = 0 ,怎么解决呢？