From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B218AC43215 for ; Sat, 23 Nov 2019 16:22:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 891B820679 for ; Sat, 23 Nov 2019 16:22:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=googlemail.com header.i=@googlemail.com header.b="FY6GS1Tb" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726774AbfKWQWy (ORCPT ); Sat, 23 Nov 2019 11:22:54 -0500 Received: from mail-wr1-f48.google.com ([209.85.221.48]:46039 "EHLO mail-wr1-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726487AbfKWQWy (ORCPT ); Sat, 23 Nov 2019 11:22:54 -0500 Received: by mail-wr1-f48.google.com with SMTP id z10so12244585wrs.12 for ; Sat, 23 Nov 2019 08:22:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=6+Qx/XmSwdlysotzxgiZiCxvFiFPZy8Ir9yDCPVjwwY=; b=FY6GS1Tbj5Y9NuC6K70PeRpDx7BvOuCRABaRXGUosAjoCCN9HPSpz9LTVG8YUPpMd6 lKD5YXsifAzTRJsVOb4YYn3VTWu70RFaMCr7eMK94Q5LoiNrUDZ+0+vWwvw/Lg+6vdwR Vx2Fe5mdLpy6WnAnzEoc2lJ35l61aJsAe+4cS1Cm15/rcmKeRIT+xszCNMaLKReBTFmZ y1BY/Ij5r4PjwmtuIikskoDrQ1etm2X2j1UHjoSQU+awlkfEexfwC/jGQY6h1+Jwil52 uQJYC2mB52d8JFkr6wVg2etfMiMJHIG7kmasGrLBN9SNEO28I12Bb/uunP8Yt/kbtNys ZKTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=6+Qx/XmSwdlysotzxgiZiCxvFiFPZy8Ir9yDCPVjwwY=; b=PTqQvpQ6nCkSxGcOH3920+iMC16wJnU+mGsGBndiS6xmgvNfro8at2WL1A1dAT0nDt h62VCSyLvViRVCGkUWRh9jgO5wQodgt5GPGV8+UmdXajNqLKMBEwLPuEnoh6hO1UKUVx M78M8zAUXdCg1uTiipF5C0BSSiPiYw3uuA0nutMLk3xda4LqNDmZpZPd2zAyPSDI2vdk 3r6L/EQAGd3PyGpmtuTBcEJtXsAGx8D8GCK1zlu40JUl50n9NsPgYLPe7uLUQPILtf8s G4ILqB8zDb5pkSecKIwLl/ZuENME9sPiaSkgeQa5FrDWEn0mjNPS4K52uJQ7S9Oil0i1 7bUg== X-Gm-Message-State: APjAAAVQ81E38OolNhdX8RKPqAWacnH2v2bzA72Vgx1Uyz5bZjVuU8Z8 +bJMB/gAw7ofK7c8oEHd2xvGfiyZ X-Google-Smtp-Source: APXvYqyuvUlxGTcV4x3CHoVLp+abWdkFR0zIwkfkC4EXsgvSPVunuiS1SUyzFbdEaj6hnVBI0ig6zA== X-Received: by 2002:adf:f987:: with SMTP id f7mr23165999wrr.284.1574526170848; Sat, 23 Nov 2019 08:22:50 -0800 (PST) Received: from desktopdebian.localdomain (x5f708d68.dyn.telefonica.de. [95.112.141.104]) by smtp.gmail.com with ESMTPSA id z15sm2286598wmi.12.2019.11.23.08.22.50 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 23 Nov 2019 08:22:50 -0800 (PST) From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= To: netfilter-devel@vger.kernel.org Subject: [PATCH nftables v2 2/2] files: add example secmark config Date: Sat, 23 Nov 2019 17:22:40 +0100 Message-Id: <20191123162240.14571-2-cgzones@googlemail.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191123162240.14571-1-cgzones@googlemail.com> References: <20191123162240.14571-1-cgzones@googlemail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org Signed-off-by: Christian Göttsche --- v2: add note about SELinux requirements for this example files/examples/Makefile.am | 1 + files/examples/secmark.nft | 87 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 88 insertions(+) create mode 100755 files/examples/secmark.nft diff --git a/files/examples/Makefile.am b/files/examples/Makefile.am index c40e041e..b29e9f61 100644 --- a/files/examples/Makefile.am +++ b/files/examples/Makefile.am @@ -1,4 +1,5 @@ pkgdocdir = ${docdir}/examples dist_pkgdoc_SCRIPTS = ct_helpers.nft \ load_balancing.nft \ + secmark.nft \ sets_and_maps.nft diff --git a/files/examples/secmark.nft b/files/examples/secmark.nft new file mode 100755 index 00000000..16f9a368 --- /dev/null +++ b/files/examples/secmark.nft @@ -0,0 +1,87 @@ +#!/usr/sbin/nft -f + +# This example file shows how to use secmark labels with the nftables framework. +# This script is meant to be loaded with `nft -f ` +# You require linux kernel >= 4.20 and nft >= 0.9.3 +# This example is SELinux based, for the secmark objects you require +# SELinux enabled and a SELinux policy defining the stated contexts +# For up-to-date information please visit https://wiki.nftables.org + + +flush ruleset + +table inet filter { + secmark ssh_server { + "system_u:object_r:ssh_server_packet_t:s0" + } + + secmark dns_client { + "system_u:object_r:dns_client_packet_t:s0" + } + + secmark http_client { + "system_u:object_r:http_client_packet_t:s0" + } + + secmark https_client { + "system_u:object_r:http_client_packet_t:s0" + } + + secmark ntp_client { + "system_u:object_r:ntp_client_packet_t:s0" + } + + secmark icmp_client { + "system_u:object_r:icmp_client_packet_t:s0" + } + + secmark icmp_server { + "system_u:object_r:icmp_server_packet_t:s0" + } + + secmark ssh_client { + "system_u:object_r:ssh_client_packet_t:s0" + } + + secmark git_client { + "system_u:object_r:git_client_packet_t:s0" + } + + map secmapping_in { + type inet_service : secmark + elements = { 22 : "ssh_server" } + } + + map secmapping_out { + type inet_service : secmark + elements = { 22 : "ssh_client", 53 : "dns_client", 80 : "http_client", 123 : "ntp_client", 443 : "http_client", 9418 : "git_client" } + } + + chain input { + type filter hook input priority 0; + + # label new incoming packets and add to connection + ct state new meta secmark set tcp dport map @secmapping_in + ct state new meta secmark set udp dport map @secmapping_in + ct state new ip protocol icmp meta secmark set "icmp_server" + ct state new ip6 nexthdr icmpv6 meta secmark set "icmp_server" + ct state new ct secmark set meta secmark + + # set label for est/rel packets from connection + ct state established,related meta secmark set ct secmark + } + + chain output { + type filter hook output priority 0; + + # label new outgoing packets and add to connection + ct state new meta secmark set tcp dport map @secmapping_out + ct state new meta secmark set udp dport map @secmapping_out + ct state new ip protocol icmp meta secmark set "icmp_client" + ct state new ip6 nexthdr icmpv6 meta secmark set "icmp_client" + ct state new ct secmark set meta secmark + + # set label for est/rel packets from connection + ct state established,related meta secmark set ct secmark + } +} -- 2.24.0