Re: conntrack, NAT and icmp echo reply

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, 2012-10-11 at 12:41 +0300, Denys Fedoryshchenko wrote:
> Hi all
> 
> I have NAT box, with very simple rule
> iptables -t nat -I POSTROUTING -s 10.0.0.0/8 -j MASQUERADE
> It can be SNAT also, and it works fine, as NAT.
> 
> When i generate icmp _reply_ packet, to some host
> hping -I ppp0 -1 --icmptype 0 8.8.8.8
> 
> It will pass the box, and will exit it without NAT, e.g. with original 
> IP 10.x.x.x
> on outgoing interface, which is not expected behavior IMHO.
> Is it a bug or feature?
> 

It depends, -s 10.0.0.0/8 wont match the rule if the source address
should be 198.23.44.55 I guess ?

I would try the more obvious

iptables -t nat -I POSTROUTING -o device -j MASQUERADE



--
To unsubscribe from this list: send the line "unsubscribe netfilter" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Netfilter Development]     [Linux Kernel Networking Development]     [Netem]     [Berkeley Packet Filter]     [Linux Kernel Development]     [Advanced Routing & Traffice Control]     [Bugtraq]

  Powered by Linux