forwarding traffic on iptables redhat 6
 

Hello
I have redhat 6.7 with iptables 1.4.7

Here are the two rules I want to make:

1-forward all incoming traffic by eht0 to eth1 (all protocols)
2-forward all incoming traffic by eth1 to another ip server (all protocols)

Here are the two rules I have defined:

1-iptables -A FORWARD -i eth0 -o eth1 -m state --state RELATED,ESTABLISHED -j ACCEPT
2-iptables -t nat -A PREROUTING -p tcp -d x.x.x.x -j DNAT --to y.y.y.y
(x.x.x.x is the ip of eth1)

Only the first pass,and when I put “iptables –S”, it is visible, the other not
The second disappears once the server rebooted.

I checked all these elements

1-CONFIG_IP_NF_TARGET_REDIRECT=m
2-CONFIG_NETFILTER_XT_MATCH_STATE=m
3-net.ipv4.ip_forward = 1

Could you help me
Thanks in advance

[QUOTE=bsystem;5620469]
Here are the two rules I want to make:

1-forward all incoming traffic by eht0 to eth1 (all protocols)
2-forward all incoming traffic by eth1 to another ip server (all protocols)
[quote]

If you are forwarding everything regardless of port or protocol then all you need is:
Not sure why you need the DNAT rule here could you explain this in more detail like what you are trying to accomplish?

One is a nat filter rule and only shows up when you list the nat rules.

That is because you need to save your rules before you reboot if you do not have that already setup in iptables-config