Re: [LARTC] HTTP only works on second try from doublely NAT'ed windows box

Linux Advanced Routing and Traffic Control

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> Here's my setup:
> ---------------
> Internet
> |
> |
> DSL Router (64.x.x.130 external, and 10.0.0.250 internal)
> |
> |
> Linux Box (10.0.0.251 internal/mapped to external 64.x.x.131 by DSL router
> NAT)
> |
> |
> Windows98 (10.0.0.122 internal - NAT'ed to 64.x.x.131 by Linux Box & DSL
> router before reaching Internet)


Are the DSL Router, the Linux Box and the Windows 98 machines all on a
single subnet, of interface? In that case the Linux box may be sending out
ICMP Redirects. Linux machines might react instantly to those redirects,
Windows only on the second try?

Use the great tool tcpdump of ethereal to find out what is exactly being
sent over the wire.

Regards,

bert hubert


It's been a few weeks for me to think about my problem, and I think I finally figured out what you meant by what you said, Bert. I think my problem is the linux box is trying to NAT between two interfaces even though they are on the same subnet. (duh! tcp/ip 101).

So I'm going to try changing the Linux box to 10.0.0.251/255.255.255.248, and the windows98 box to 10.0.0.122/255.255.255.128, and see if the NAT will work correctly after that.

Thanks, again!

-Dan




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