Re: ip_conntrack_icmp_timeout now taking effect

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On 01/03/2012 13:39, jonetsu wrote:
   What is there to do to be able to stop pings as soon as the firewall
is set up while keeping the now-observed icmp conntrack timeout ?  Is
it possible to selectively flush only the ICMP connection tracking
table ?

Regarding the second question, you might be able to do that if you assign a distinct conntrack zone for ICMP traffic (via the CT target). You should then be able to run conntrack -D -w <zone-id> but I haven't personally tried it. Not particularly elegant but it doesn't appear to be possible to use -D with -p icmp alone.



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