Re: FIN packets not getting NAT-ed

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Dhyanesh Ramaiya a écrit :
> 
> I have setup a Linux firewall on the edge of the network and doing SNAT for
> internal IPs. When I sniff on external interface for internal source IPs,I
> am seeing FIN packets from internal IPs going out without being NAT-ed.

These packets are probably classified in the INVALID state by the
connection tracking. Such packets are ignored by the NAT. A reason may
be that they belong to old connections the connection tracking has
forgotten about or considers already closed.

Does your rulest DROP outgoing packets in the INVALID state ?
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