From owner-freebsd-questions@FreeBSD.ORG Fri Jun 19 20:29:57 2015 Return-Path: Delivered-To: freebsd-questions@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id A510AD56 for ; Fri, 19 Jun 2015 20:29:57 +0000 (UTC) (envelope-from jd1008@gmail.com) Received: from mail-ie0-x235.google.com (mail-ie0-x235.google.com [IPv6:2607:f8b0:4001:c03::235]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 6DDBEFB4 for ; Fri, 19 Jun 2015 20:29:57 +0000 (UTC) (envelope-from jd1008@gmail.com) Received: by iebgx4 with SMTP id gx4so81885084ieb.0 for ; Fri, 19 Jun 2015 13:29:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; bh=oG7gsfcVXg2OnPrwqfRwv7LomLTvyZrgs5uGDpu1PNA=; b=Ach6qrN7NkEZPWbzhS0b5IesUujSVCBWm/m7e8Rb/S9eiIdqojs+j/b5rbLZA5SL8y 1/iwc934xzQVdvtp36ZEBr2avIui01rmEBSU3/41XunZgx156fE/3LQbJXynggJQF3uO MoiqgXpfE6mLtdjbayilqz/avQb6tFRif6gXW6gm6wwFjhTB5I8T427dA5NEQRB/hAdh UBmDmWmJ+wiLbRCPBO1un5hF8/baUAqGdqKrF1Gg6geCz+Y4RgxUYm49+nO/xc4jDmoo GNzZDr5Txn90lW5LUeK/RbVOYX+WcO1pMYUw6j1YjfmNkSbLMpzhjbAzBCgt+4314SI0 vWpw== X-Received: by 10.50.61.234 with SMTP id t10mr6973882igr.19.1434745796773; Fri, 19 Jun 2015 13:29:56 -0700 (PDT) Received: from localhost.localdomain ([50.243.6.59]) by mx.google.com with ESMTPSA id g1sm7726608iog.4.2015.06.19.13.29.55 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 19 Jun 2015 13:29:55 -0700 (PDT) Message-ID: <55847BCA.8000607@gmail.com> Date: Fri, 19 Jun 2015 14:30:02 -0600 From: jd1008 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: freebsd-questions@freebsd.org Subject: Re: non-routeable traffic from 10.0.0.0/8 References: <55847AF9.7010201@gmail.com> In-Reply-To: <55847AF9.7010201@gmail.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit 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: Fri, 19 Jun 2015 20:29:57 -0000 On 06/19/2015 02:26 PM, Ernie Luzar wrote: > Hello List; > > In my firewall log I see log entries showing inbound traffic being > blocked from ip addresses in the 10.0.0.0/8 range. > > My question is what purpose can this be used for by a hacker? Well, for one thing, since these are local lan addresses, it can block your 10.x.x.x network in the specified (lowest octet) range from talking to each other.