From owner-freebsd-questions@freebsd.org Sat Feb 17 23:25:30 2018 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 31D89F1AD8B for ; Sat, 17 Feb 2018 23:25:30 +0000 (UTC) (envelope-from freebsd@edvax.de) Received: from mout.kundenserver.de (mout.kundenserver.de [212.227.126.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "mout.kundenserver.de", Issuer "TeleSec ServerPass DE-2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 8800F72C11 for ; Sat, 17 Feb 2018 23:25:29 +0000 (UTC) (envelope-from freebsd@edvax.de) Received: from r56.edvax.de ([92.195.213.55]) by mrelayeu.kundenserver.de (mreue007 [212.227.15.167]) with ESMTPA (Nemesis) id 0Mfepz-1f7rFB2EkF-00P4Pi; Sun, 18 Feb 2018 00:25:22 +0100 Date: Sun, 18 Feb 2018 00:25:22 +0100 From: Polytropon To: Stari Karp Cc: FreeBSD Questions Subject: Re: ipfw firewall Message-Id: <20180218002522.1f24754f.freebsd@edvax.de> In-Reply-To: <1518905856.89579.1.camel@yandex.com> References: <1518905856.89579.1.camel@yandex.com> Reply-To: Polytropon Organization: EDVAX X-Mailer: Sylpheed 3.1.1 (GTK+ 2.24.5; i386-portbld-freebsd8.2) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:34NQFYFDZ41HoUvFIsAAINYOH9vve3UJkAegTxpPW4ZkhARsFbW QUri6GVkIK1KzaLsFlH44BehOSYBiYFPNd+R36Jo2f8R00/ckekHi6tV24CYkksA9gDyTa5 3it9p+JSoZ9C1DCcRaYEpJXoz3S7Yv8S8UMhpJFNLgtP1IvBWeCNQ5gNj03s5UgjOX8rP8/ Rm8IQ6yP6Mz04N9+5Br9g== X-UI-Out-Filterresults: notjunk:1;V01:K0:E13JBnNeP4U=:/uJu2bqphjHO/Ude+A8CaQ ATAAyiQf8x7o8hlOIgB8zwMABXdjiA1RDsDYp0hsPaeUozKdx8ezFo6Q72pOzhApPXpQ3Rj5v PyJ3cZsR4+pL4LUbMsCGm6qUT15RMcIjDPr8nZPQBUPIAlFC5tVpUxLbJ1kjxeMmikqLXPQqs R2lSNq7C7kutTf93ZYH6EehobtnTUqrYiuW2ZEKFC1+9HxPUFquc9x59tcEpQW5BkYt2IhaSg GnFi+UVpUNoFcxN27iHjmujx8DTBeBjqnJmh9ZB4TYGqlo2BuWl388A9yIlc8lrd86laWhebe NblAsLapUe9783HteOvqisnMT8MYXRHt+LMTJvGFgNEe/dxG4acD5SzCfhMZrdmsfqM/aTZQa YMwBaXD9Tmna+NRXFQ9m1fkFtjnm7iOqFmkJnao2FFdw4SkGBCkUNlpuKQZwdFEjdBWt3jFMD 40XxrSXqicWWWv6iKpEn/BQX1FeDCiDzPyP7Ly2yQZvxct1qGcaE40iVDhSlHW9nnz1R++4YX A81gADJtkwgWFcRwzULgB5sOdBigAc8669JcIywjQZ2OHuexqBkE3OOCkdKwSyEOvgJW0P9k1 YCgT8ztxT2oIPeSr8fryRTo2+N2sbaQajD1tNwy8+zDnRDNNnVM+m9ib7ijAldS51P7QyIsTD 58VRpYQSjw/qmuQPfH/PZj7ZlNPJ7Sq+7tA5D7TwfiSzmp0jGjqWkgQMH7sAhQkSOMPSldZKI L1ZSbIUgLSgmTOXG0aDwOTZZT9c/2stLzTCQO5D9QSP1eaIwTQTjx92BjNQ= X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 17 Feb 2018 23:25:30 -0000 On Sat, 17 Feb 2018 17:17:36 -0500, Stari Karp wrote: > Hi! > > I am using FreeBSD 11.1-RELEASE (amd64), single desktop computer. I try > to setup a IPFW firewall and I am confused about logging settings. > In /etc/rc.conf I have: > firewall_enable="YES" > firewall_quiet="YES" > firewall_type="workstation" > firewall_logdeny="YES" > firewall_logging="YES" > > When I start computer I got about firewall: > ipfw2 (+ipv6) initialized, divert loadable, nat loadable, default to > deny, logging disable > In /var/log/security is: newsyslog[28503]: logfile first created > > How should I know if firewall works? Easiest way: with an external test, for example with nmap. > I had to use pf firewall and I had > so many logs related to "igmp query v3". You can set IPFW's default logging at kernel compile time (example from an older system): # Firewall, NAT options DUMMYNET options IPFIREWALL options IPFIREWALL_DEFAULT_TO_ACCEPT options IPFIREWALL_VERBOSE options IPFIREWALL_VERBOSE_LIMIT=500 options IPFILTER options IPDIVERT Today, those can probably be configured dynamically. I don't know if there is a "kernel tunable" for those setting, but it probably is. -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...