From owner-freebsd-pf@freebsd.org Thu Dec 26 00:14:01 2019 Return-Path: Delivered-To: freebsd-pf@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 41A3C1E8A9C for ; Thu, 26 Dec 2019 00:14:01 +0000 (UTC) (envelope-from ozkan.kirik@gmail.com) Received: from mail-vk1-xa35.google.com (mail-vk1-xa35.google.com [IPv6:2607:f8b0:4864:20::a35]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 47jr6H5tq5z4Nq5 for ; Thu, 26 Dec 2019 00:13:59 +0000 (UTC) (envelope-from ozkan.kirik@gmail.com) Received: by mail-vk1-xa35.google.com with SMTP id c129so5829052vkh.7 for ; Wed, 25 Dec 2019 16:13:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=3uVd7JyGyml8nXH8NPajT0PeGN6fNYUaI4QBeHRVyNE=; b=aSft1SeH5oPbkZ8piQ0KuXgggPxVf4Roh5wANu/9BIadckReY9rBLzlLgIF3/u6zTW Yc8FesrlrkzrvRLau9Smm593A+MWv8z+92Gvue8jH4n5vJvpAvlJumT4OrUHpoxD3a0u 6EKDyIsBWxEbOMNIceWMybid3AUTHhCxjJAdkUDE7/+3PjzIPU1hQz4XXN0MzVEkGE2I UoBJpM1ppiH22Ygeaexo0pgV/IS4R2zJGe4FBI4MQdB/rQuPG7eLUYyyzyM08PqUP4pu U6WiLCQq/2HU8+TfyVae8nsHI8HQgf/4q44h4OHIMRe6nnpm6hLL/4z6NbYrTpRJTAt0 GDFw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=3uVd7JyGyml8nXH8NPajT0PeGN6fNYUaI4QBeHRVyNE=; b=HB2okRj6779utpsAZcfNSQ2z2qpdgMoxD9qeXQmLc55E2oTCIa/OZeT/37GcmIc+Ki WcxAptNxIIwo0QidoDwUvsljqNdbvSgju7o2D43ocXqSdN1djR/foZ36zqAZhAHIDdf6 dVlI0SQ7ilV3nb+zD5fMmIRh8fIDpKyyq+Dtqa21Xnh1+vxDXu8FVUuZ90IbQl/lemDF PE/SmvJ3wirkeH71vn5SLd51opyt/ZGMnPdtHiIWwzAp+fyOjSM8OBwHGUSSYqZqjUWA Af+/H0Gdha162FD/tdOmGzKEIBCqZk6uDmo643z8806bwPOwIYFDZV6yCpArZ/2YiqOK YDqA== X-Gm-Message-State: APjAAAXHC8vov6VytgcHgaY45TVuRLk4ECDKqVhWMCTdHyM3em/asXIw 18zd6JElZKHQ5/vKdUrYPzkTcBAEP9QidUxpgkLyVYUm X-Google-Smtp-Source: APXvYqwGZqq8YV2UdFFTl1w4CEW2RuHai4ZiFCfqjrI7MNdM4aGygAEVA8EBZFvxSMhy7ebLXWNdYwo94sN48QaL+Sw= X-Received: by 2002:a1f:6743:: with SMTP id m3mr25456525vki.16.1577319238460; Wed, 25 Dec 2019 16:13:58 -0800 (PST) MIME-Version: 1.0 From: =?UTF-8?B?w5Z6a2FuIEtJUklL?= Date: Thu, 26 Dec 2019 03:13:47 +0300 Message-ID: Subject: Blocking SYN with data To: freebsd-pf@freebsd.org X-Rspamd-Queue-Id: 47jr6H5tq5z4Nq5 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=aSft1SeH; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of ozkankirik@gmail.com designates 2607:f8b0:4864:20::a35 as permitted sender) smtp.mailfrom=ozkankirik@gmail.com X-Spamd-Result: default: False [-3.00 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com.dwl.dnswl.org : 127.0.5.0]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36:c]; FREEMAIL_FROM(0.00)[gmail.com]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-pf@freebsd.org]; TO_DN_NONE(0.00)[]; IP_SCORE_FREEMAIL(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; IP_SCORE(0.00)[ip: (-9.69), ipnet: 2607:f8b0::/32(-2.16), asn: 15169(-1.88), country: US(-0.05)]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; RCVD_IN_DNSWL_NONE(0.00)[5.3.a.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; TAGGED_FROM(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-pf@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Technical discussion and general questions about packet filter \(pf\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 26 Dec 2019 00:14:01 -0000 Hi, I want to block SYN with data packets. I read the pf.conf manual, but couldn't find a clear way to do this. Is it possible to match packets greater then N bytes using pf on FreeBSD 12.1 stable? Does synproxy state or modulate state perform this operation? Thanks