[H-GEN] weird iptables problem

Johann johann at spot-the-dog.com
Tue Apr 22 21:44:48 EDT 2003


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Russell Stuart wrote:

>  
>
>Johann,
>
>You are masquerading incoming packets are well as outgoing ones.  I
>don't have time to give a full explanation of why this is bad, so for
>now if you just insert this rule before the -j MASQUERADE one you should
>be OK:
>
>/sbin/iptables -t nat -A POSTROUTING -s ! <internal-network> -j ACCEPT
>
>eg, if you are using IP addresses 192.168.10.0 .. 192.168.10.255 for
>your internal network, then this is what you would want:
>
>/sbin/iptables -t nat -A POSTROUTING -s ! 192.168.10.0/8 -j ACCEPT
>
>
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thanks for that, that did the trick, and clearly my understanding of 
iptables is more limited than I thought.  I can see where I was going 
wrong now (gotta lovee hindsight),  I'm just unsure why my setup was 
masquerading incoming and outgoing packets and why I haven't seen this 
error on other machines I'd set up. Back to more reading I guess

cheers

Johann



-- 
Johann Kwiatkowski
Spot The Dog Graphics
ph: (07) 33233677
fax: (07) 33233677
mobile: 0418 797 419
web: www.spot-the-dog.com




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