LinuxQuestions.org - [SOLVED] Can't add a Port address translation rule

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Can't add a Port address translation rule

Hi All,

I try since two days to redirect traffic coming in a port to another address and port, the problem is that iptables returns me :

Code:

iptables: No chain/target/match by that name.

I use linux kernel 2.6.39
iptables version iptables v1.4.12

here the rules

Code:

iptables -v -t nat -D PREROUTING -p tcp --dport 80 -j DNAT --to-dest

ination 192.168.0.3:81 

DNAT  tcp opt -- in * out *  0.0.0.0/0  -> 0.0.0.0/0  tcp dpt:80 to:192.168.0.3:81

iptables: No chain/target/match by that name.

Does any one Know which option I have to activate in the kernel to resolve this ?

Thank you

Option "-D" means to delete specific rule, you want to use option "-I PREROUTING" or "-A PREROUTING" to add new rule. Remember also to enable forwarding on this machine, by for example:

Code:

echo 1 > /proc/sys/net/ipv4/ip_forward

Thank you eSelix, this fixes my problem.