Re: [RFC][PATCH] Per-conntrack timeout target v3

[Patrick McHardy <kaber@trash.net>]

Phil Oester wrote:
> Some further updates/optimizations to my original posting.  This version
> handles all protocols now.  Anyone besides me think this is useful?
> 
> ***
> 
> I use a fairly short 2 hour established timeout on firewalls I operate,
> which works fine for most purposes.  Occasionally, however, it would
> be nice to have a longer timeout for *certain* types of traffic
> such as SSH or telnet sessions.  
> 
> So, below find a TIMEOUT target to enable such per-conntrack timeouts.
> Syntax for SSH would be something like:
> 
>         iptables -A foo -p tcp --dport 22 -j TIMEOUT --timeout 123456
>         iptables -A foo -p tcp --dport 22 -j ACCEPT
> 
> It could of course also be used to lower the timeouts on some traffic,
> such as HTTP.


I think the patch is useful, but I wonder how long it will take until
people want to override timeouts for other connection states. I'm
also looking for a way to pass parameters for new connections to
helpers (most of the things that are currently module parameters),
so maybe we could generalize this to a conntrack parameter target?