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[2620:137:e000::1:18]) by mx.google.com with ESMTPS id oc4si1173087pjb.118.2022.02.23.17.44.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Feb 2022 17:44:30 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=g4BRZ7ss; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 75C2317DB91; Wed, 23 Feb 2022 17:19:35 -0800 (PST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242729AbiBWQU6 (ORCPT + 99 others); Wed, 23 Feb 2022 11:20:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56952 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234267AbiBWQU5 (ORCPT ); Wed, 23 Feb 2022 11:20:57 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2672BC4E22; Wed, 23 Feb 2022 08:20:29 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id CA9C9B82086; Wed, 23 Feb 2022 16:20:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D4853C340F0; Wed, 23 Feb 2022 16:20:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1645633226; bh=iwzxRJ3WVWy1eMmDfafaRhAbMtXzmT+t5EvSTlNcAhw=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=g4BRZ7ssHQH3BTFNVPjOS3ckd3nmgvpjeaE6eLm4+XUXP0p5axjNrcGTtMfzhmrq7 Nhcbf3g9R8hNq0paOiE1nVkEqAotlMxe0EaQZQadN0Uhz+KTv7PmTPenDkuPRDcuQR Tt1uJZ4G4Kq6w+taKyNr/4T9SwKhCu8dSVdDotMfP28fc1ubQRb7y84aXgqkPWSaLi 9fl+THewyu4XI3Mmd4yN5JxIfYW9UzLW+ETSwyjh2IAtNPq2MhczbUAgXaxV6LgxEV N1JZPlcngeU5p4x7XKaQM51n98/bb2knKdm8kOW7TlJOqAK2PEQ2IiLNdXp7jQPJZJ h1T0z0snwRKCQ== Date: Wed, 23 Feb 2022 08:20:24 -0800 From: Jakub Kicinski To: Hans Schultz Cc: davem@davemloft.net, netdev@vger.kernel.org, Andrew Lunn , Vivien Didelot , Florian Fainelli , Vladimir Oltean , Roopa Prabhu , Nikolay Aleksandrov , Shuah Khan , Stephen Suryaputra , David Ahern , Ido Schimmel , Petr Machata , Amit Cohen , Po-Hsu Lin , Baowen Zheng , linux-kernel@vger.kernel.org, bridge@lists.linux-foundation.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH net-next v4 0/5] Add support for locked bridge ports (for 802.1X) Message-ID: <20220223082024.6ab51265@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> In-Reply-To: <86y222vuuc.fsf@gmail.com> References: <20220222132818.1180786-1-schultz.hans+netdev@gmail.com> <20220222111523.030ab13d@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> <86y222vuuc.fsf@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-2.3 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI, RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 23 Feb 2022 09:40:59 +0100 Hans Schultz wrote: > > You still haven't answer my question. Is the data plane clear text in > > the deployment you describe? > > Sorry, I didn't understand your question in the first instance. So as > 802.1X is only about authentication/authorization, the port when opened > for a host is like any other switch port and thus communication is in > the clear. Alright, thanks for clarifying! > I have not looked much into macsec (but know ipsec), and that is a > crypto (key) based connection mechanism, but that is a totally different > ballgame, and I think it would for most practical cases require hardware > encryption.