How to forward a local port to another IP (kernel 2.6.12)

saba · 09-22-2005, 09:43 AM

Hi!

I'm trying to forward all (locally generated) traffic through a (local) port to the same port on a remote machine. Until recently the following lines in the iptables config file did the job perfectly:

*nat
-A OUTPUT -p tcp -d localhost --dport yy -j DNAT --to xx.xx.xx.xx:yy
COMMIT

But since the last kernel update I get the following error at iptables startup:

kernel: NAT: no longer support implicit source local NAT
kernel: NAT: packet src xx.xx.xx.xx -> dst 127.0.0.1

Does anybody know what went wrong? I'm running the kernel 2.6.12-1.1372_FC3.

Thanks for any help.

saba

dcoyaz · 09-22-2005, 12:56 PM

You are using the table parameter right?

-t nat -A ....

saba · 09-23-2005, 02:48 AM

As I understood the structure of the configuration file (/etc/sysconfig/iptables in the FC3 distro) everything between the lines '*nat' and 'COMMIT' goes into the nat table. Am I right?

navilein · 09-14-2008, 08:06 PM

Quote:

Originally Posted by saba

Hi!

I'm trying to forward all (locally generated) traffic through a (local) port to the same port on a remote machine. Until recently the following lines in the iptables config file did the job perfectly:

*nat
-A OUTPUT -p tcp -d localhost --dport yy -j DNAT --to xx.xx.xx.xx:yy
COMMIT

But since the last kernel update I get the following error at iptables startup:

kernel: NAT: no longer support implicit source local NAT
kernel: NAT: packet src xx.xx.xx.xx -> dst 127.0.0.1

Does anybody know what went wrong? I'm running the kernel 2.6.12-1.1372_FC3.

Thanks for any help.

saba

This post is a bit old. I'm trying to do the same thing. Did anyone came up with a solution for it by any chance ?

Thanks!