ip_conntrack garbage



Yesterday I ran an nmap portscan on our internal network
from our Linux router/firewall (FC4 kernel 2.6.14-1.1653).

Today I was looking in /proc/net/ip_conntrack and see one
[UNREPLIED] entry for each unsuccessful probe (i.e. one per
internal unallocated IP address) in the table.

Aren't these supposed to go away after a while? They've been
in the conntrack table now for about 22 hours.

Is this a bug?  If they don't go away, will my conntrack table
eventually fill up?

Can I change the timeout value or flush the conntrack table
to clean up the stale entries?

TIA

Jim Garrison
jhg@xxxxxxxxxxxxxxx
.



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