From owner-freebsd-ipfw@freebsd.org Tue Feb 12 07:24:20 2019 Return-Path: Delivered-To: freebsd-ipfw@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 1B18D14D9BA7 for ; Tue, 12 Feb 2019 07:24:20 +0000 (UTC) (envelope-from crapsh@monkeybrains.net) Received: from sfo.monkeybrains.net (mail.monkeybrains.net [208.69.40.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.monkeybrains.net", Issuer "AlphaSSL CA - SHA256 - G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 14A5B75DD3 for ; Tue, 12 Feb 2019 07:24:18 +0000 (UTC) (envelope-from crapsh@monkeybrains.net) Received: from mail.monkeybrains.net (mail.monkeybrains.net [208.69.40.19]) by sfo.monkeybrains.net (8.15.2/8.15.2) with ESMTP id x1C7OHit075622 for ; Mon, 11 Feb 2019 23:24:17 -0800 (PST) (envelope-from crapsh@monkeybrains.net) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=monkeybrains.net; s=dkim; t=1549956257; bh=DLpva2yEKNB/460ie84UbcbXMaqFXc/qHvFD7Dsrqkw=; h=In-Reply-To:References:Date:Subject:From:To; b=LpbtQWahhvnXdWMjDD5c4DCeEDaoL4h6t9YXSRcY1GoD1oRpE/7QE0QY6TeWPwyRV 9mKiTJADSRHbg7o+sUYrE/6pQZ2v7Lw6HcUy5lqbazbS7Quz5ITjhY7hp7WwyuTtaq 3opivhu7cfxe93BI2pa1x4QCGUUs1sw4JLUAphWY= Received: from 148.64.99.20 (SquirrelMail authenticated user rudy-ftp@monkeybrains.net) by mail.monkeybrains.net with HTTP; Mon, 11 Feb 2019 23:24:17 -0800 Message-ID: In-Reply-To: References: Date: Mon, 11 Feb 2019 23:24:17 -0800 Subject: Patch to have ipfw0 work properly in jails From: "Rudy (bulk address)" To: freebsd-ipfw@freebsd.org User-Agent: SquirrelMail/1.4.22 MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal X-Virus-Scanned: clamav-milter 0.100.2 at mail.monkeybrains.net X-Virus-Status: Clean X-Rspamd-Queue-Id: 14A5B75DD3 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=monkeybrains.net header.s=dkim header.b=LpbtQWah; dmarc=pass (policy=none) header.from=monkeybrains.net; spf=pass (mx1.freebsd.org: domain of crapsh@monkeybrains.net designates 208.69.40.19 as permitted sender) smtp.mailfrom=crapsh@monkeybrains.net X-Spamd-Result: default: False [-3.35 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.98)[-0.975,0]; R_DKIM_ALLOW(-0.20)[monkeybrains.net:s=dkim]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+ptr]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-ipfw@freebsd.org]; TO_DN_NONE(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; IP_SCORE(-0.01)[country: US(-0.07)]; DKIM_TRACE(0.00)[monkeybrains.net:+]; MX_GOOD(-0.01)[cached: mx1.harsh.monkeybrains.net]; HAS_X_PRIO_THREE(0.00)[3]; NEURAL_HAM_SHORT(-0.35)[-0.353,0]; DMARC_POLICY_ALLOW(-0.50)[monkeybrains.net,none]; RCVD_NO_TLS_LAST(0.10)[]; RCVD_IN_DNSWL_LOW(-0.10)[19.40.69.208.list.dnswl.org : 127.0.5.1]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:32329, ipnet:208.69.40.0/22, country:US]; RCVD_COUNT_TWO(0.00)[2]; DWL_DNSWL_NONE(0.00)[monkeybrains.net.dwl.dnswl.org : 127.0.5.0] X-BeenThere: freebsd-ipfw@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: IPFW Technical Discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Feb 2019 07:24:20 -0000 Never submitted a patch... is this good enough? Problem: ipfw logs in a way that is confusing in jails (it logs to the host syslogd) Solution: use ipfw0 and make sure to fix up syslog and launch tcpdump if firewall_logif is set in rc.conf Thanks, Rudy --- /etc/rc.d/ipfw.orig 2019-02-11 23:19:09.074313000 -0800 +++ /etc/rc.d/ipfw 2019-02-11 23:17:37.675032000 -0800 @@ -65,8 +65,23 @@ ${SYSCTL} net.inet.ip.fw.verbose=1 >/dev/null fi if checkyesno firewall_logif; then - ifconfig ipfw0 create - echo 'Firewall logging pseudo-interface (ipfw0) created.' + if ! ifconfig ipfw0 > /dev/null 2> /dev/null; then + ifconfig ipfw0 create + echo 'Firewall logging pseudo-interface (ipfw0) created.' + # have tcpdump listen to ipfw and send info to logger + /usr/sbin/tcpdump -lnti ipfw0 2> /dev/null | /usr/bin/logger -t www -p security.info & + echo "ipfw0 redirecting to syslog" + elif ! killall -0 tcpdump 2> /dev/null; then + # no tcpdump running... launch it! + /usr/sbin/tcpdump -lnti ipfw0 2> /dev/null | /usr/bin/logger -t www -p security.info & + echo "ipfw0 redirecting to syslog" + fi + fwverbose=`sysctl -n net.inet.ip.fw.verbose` + if [ $fwverbose == 1 ]; then + # turn down for what ... I mean, turn off verbose so ipfw0 is used. + sysctl net.inet.ip.fw.verbose=0 > /dev/null + echo "verbose logging off and redirecting to ipfw0" + fi fi }