From owner-freebsd-questions@freebsd.org Mon Oct 12 18:32:54 2015 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E6042A11DF0 for ; Mon, 12 Oct 2015 18:32:54 +0000 (UTC) (envelope-from terje@elde.net) Received: from rand.keepquiet.net (keepquiet.net [144.76.43.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "keepquiet.net", Issuer "PositiveSSL CA 2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id AA8E010B8 for ; Mon, 12 Oct 2015 18:32:53 +0000 (UTC) (envelope-from terje@elde.net) Received: from [10.130.11.103] (cm-84.210.87.28.getinternet.no [84.210.87.28]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: terje@elde.net) by rand.keepquiet.net (Postfix) with ESMTPSA id 86310E9B; Mon, 12 Oct 2015 18:32:44 +0000 (UTC) References: <561BB03D.1060104@gmail.com> In-Reply-To: <561BB03D.1060104@gmail.com> Mime-Version: 1.0 (1.0) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Message-Id: <51462673-A972-40A4-A5AF-163834A154CC@elde.net> Cc: freebsd-questions X-Mailer: iPhone Mail (10B500) From: Terje Elde Subject: Re: Are udp packets with non-routeable ip addresses valid on public network? Date: Mon, 12 Oct 2015 20:32:44 +0200 To: Ernie Luzar X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 12 Oct 2015 18:32:55 -0000 On 12. okt. 2015, at 15:06, Ernie Luzar wrote: > I am receiving unsolicited inbound udp packets with a "to ip address" [10.= 0.10.1] of a computer on my LAN. Is this valid? It shouldn't be routes over the internet to you, but it's pretty common to u= se between your ISP and yourself, for things like DHCP. What are the port-nu= mbers? 67/68 or thereabout? Terje=