Re: Permit *any* destination port from source ip

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On Monday 2009-01-19 21:11, Simon Labrecque wrote:
>
>   I would like to have a specific connection act like an "authentication"
>service; that is, when a connection to a specific port is made and once the
>required data has passed between the 2 hosts, the client is now
>authenticated, permitting access to other network services which are flagged
>with the RELATED state (and not the NEW one).

"RELATED" is for protocol-related connections and, I think, it should
not be abused to denote "AUTHENTICATED".

>   Is this possible? It seems it was possible a while ago (while
>exp->mask.dst was still present), but this was removed and I don't see how I
>can achieve the same functionality with the current structures. Am I missing
>something?

A userspace daemon can augment the ruleset after authentication,
either by calling iptables(8), or iptables-restore/save.
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