Skip site navigation (1)Skip section navigation (2)
Date:      Tue, 13 Dec 2016 16:15:25 +0000
From:      Gary Palmer <gpalmer@freebsd.org>
To:        Michael Butler <imb@protected-networks.net>
Cc:        Dimitry Andric <dim@FreeBSD.org>, FreeBSD Current <freebsd-current@FreeBSD.org>
Subject:   Re: Log spam: Limiting * response from 1 to 200 packets/sec
Message-ID:  <20161213161525.GA7032@in-addr.com>
In-Reply-To: <1eb2e94b-c460-8116-8ffc-f7884be644f7@protected-networks.net>
References:  <630314dc-e14f-02e7-aa48-4456b0feeef9@protected-networks.net> <8332C070-E7C8-4CF3-B5DF-2355D9FA20D1@FreeBSD.org> <1eb2e94b-c460-8116-8ffc-f7884be644f7@protected-networks.net>

next in thread | previous in thread | raw e-mail | index | archive | help
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

Regards,

Gary



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20161213161525.GA7032>