Something with port 53
Mikko Työläjärvi
mbsd at pacbell.net
Sun Nov 9 12:19:41 PST 2003
On Sun, 9 Nov 2003, [ISO-8859-2] Gannater János wrote:
> Hello,
>
> I've posted this question to the freebsd-newbies list, but there nobody
> could answer it.
> Please help me with this qestion...
>
> I have a box with 2 IP addresses (with aliases).
> I usually get these error messages:
> Connection attempt to UDP IP_ADDR_1:1409 from IP_ADDR_2:53
> What does this mean?
It looks an awful lot like DNS replies from a server in IP_ADDR_2
to a client that has stopped waiting for a response and closed
its socket. Pretty normal.
> I don't have any DNS server installed on the computer and the firewall
> is disabled on the system as well.
Are you sure...?
> etc/hosts:
> ::1 localhost localhost.domain.com
> 127.0.0.1 localhost localhost.domain.com
> IP_ADDR_1 www.domain.com www
> IP_ADDR_2 mail.domain.com mail
>
> etc/sysctl.conf
> net.inet.udp.blackhole=1
What about net.inet.udp.log_in_vain?
$.02,
/Mikko
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