Re: Correct Chains to Apply Rules

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Hello,

netfilter@xxxxxxxxxxxxxx a écrit :
> 
> In the following scenario.  Someone makes a new HTTP request from the
> Internet that is allowed inbound on eth0 and goes out of the eth1
> interface to the HTTP server in the server network. 
> The HTTP server in the server network sends the response to the original
> requester.  
> 
> Does the response ever hit the INPUT chain of ETH1?

No.

> Or does it immediately go to the FORWARD chain

Yes.

> and out the OUTPUT chain of eth0.  

No.
The three filter chains are mutually exclusive : a packet can only go
through one of them. Forwarded packets only go through the FORWARD chain.
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