On Tue, Dec 13, 2016 at 11:19:18AM -0500, Michael Butler wrote:
> On 12/13/16 11:15, Gary Palmer wrote:
> > On Tue, Dec 13, 2016 at 10:43:27AM -0500, Michael Butler wrote:
> >> On 12/13/16 10:29, Dimitry Andric wrote:
> >>> Somebody is most likely port scanning your machines. I see this all the
> >>> time on boxes connected to the internet.
> >> As are mine. I wouldn't mind so much if the message contained sufficient
> >> useful information that could be acted on, e.g. originating IP address
> >> and, when appropriate, destination port.
> > sysctl net.inet.tcp.log_in_vain=1
> > sysctl net.inet.udp.log_in_vain=1
> > be prepared for a lot of logs if you are being port scanned
> Or, apparently, have a windoze box on that segment :-(
Windows client boxes at least do a lot of broadcasts, but in my experience
they don't trigger log_in_vain (maybe they will if you have promisc network
interfaces enabled). Not sure about servers as I don't have any at home.
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