linux上NAT转发问题，允许转发设置 (linux 开启ip转发)

vim /etc/sysctl.conf  这里是重点 配睁巧置路由转发，路由开启等都要用到悉皮键。

# Controls IP packet forwarding

net.ipv4.ip_forward = 0

修改为

# Controls IP packet forwarding

net.ipv4.ip_forward = 1    允许内置路握槐由

sysctl -p    更新

*nat

:PREROUTING ACCEPT

:POSTROUTING ACCEPT

:OUTPUT ACCEPT

-A PREROUTING -i eth2 -p tcp -m tcp –dportj DNAT –to-destination 192.168.195.28:8080

-A POSTROUTING -j MASQUERADE