CentOS - May 2007 - NAT from eth0:0 port 80 to lo port 8080?

I'm stumped.

We have a CentOS 4.4 box with something like the following IPs:
	eth0: 64.61.61.100
	eth0:0 64.61.61.112
	eth1: 10.0.0.100
	lo: 127.0.0.1 (of course)

We want requests to 64.61.61.112:80 to be NAT'ed to 127.0.0.1:8080.

This seems like it should be really simple -- maybe the following? --  
I've tried variants combining this rule with a POSTROUTING rule,  
tried dnat, snat, etc. -- but no luck.
	echo 1 > /proc/sys/net/ipv4/ip_forward
	iptables -t nat -A PREROUTING  -i eth0 -p tcp -m tcp -d 64.61.61.112  
--dport 80 -j DNAT --to-destination 127.0.0.1:8080

The box's iptables are rather vanilla -- pretty much the standard  
"allow ssh, http" in (I added 8080 just to eliminate that as a  
possibility, too, even though 8080's only listened to on localhost).

What am I missing?

Thanks!

best,
Jeff
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Jeff Potter wrote:
> 
> What am I missing?
Run tcpdump on eth0 and then on lo and do a few tests, look at what 
happens at the packet level, and you'll probably figure it out in no time.

-- 
Florin Andrei

http://florin.myip.org/

On Thu May 10 2007 16:14, Jeff Potter wrote:
>  I'm stumped.
>
>  We have a CentOS 4.4 box with something like the following IPs:
>   eth0: 64.61.61.100
>   eth0:0 64.61.61.112
>   eth1: 10.0.0.100
>   lo: 127.0.0.1 (of course)
>
>  We want requests to 64.61.61.112:80 to be NAT'ed to 127.0.0.1:8080.
Look at REDIRECT.  That is the command to redirect packets on the box.


-- 

Regards
Robert

Smile... it increases your face value!

Jeff Potter wrote:
> 
> I'm stumped.
What are you trying to achieve? Transparent proxying?