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Mon, 12 Dec 2022 19:12:45 GMT Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A25A07805E; Mon, 12 Dec 2022 20:29:47 +0000 (GMT) Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DDD627805C; Mon, 12 Dec 2022 20:29:46 +0000 (GMT) Received: from lingrow.int.hansenpartnership.com (unknown [9.163.25.229]) by b03ledav004.gho.boulder.ibm.com (Postfix) with ESMTP; Mon, 12 Dec 2022 20:29:46 +0000 (GMT) Message-ID: <92daee895872aab2047c3768a9c67b1839406568.camel@linux.ibm.com> Subject: Re: [PATCH] tpm: add backend for mssim From: James Bottomley To: Stefan Berger , "Daniel P." =?ISO-8859-1?Q?Berrang=E9?= Cc: qemu-devel@nongnu.org, Markus Armbruster Date: Mon, 12 Dec 2022 14:12:42 -0500 In-Reply-To: References: <4780481659602f92fffacac66e7dca41ad2787c4.camel@linux.ibm.com> <8066be497c4c81827b24a672a550a805e06eec68.camel@linux.ibm.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.42.4 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: B_M2T4vHuv4PAwWIZdR8GEOH9Yt8zREd X-Proofpoint-GUID: pYqFzIj34ZbjLHFpHye2v6vIXbIsSq2T X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-12-12_02,2022-12-12_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 lowpriorityscore=0 clxscore=1015 impostorscore=0 mlxscore=0 malwarescore=0 bulkscore=0 phishscore=0 mlxlogscore=628 spamscore=0 suspectscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2212120172 Received-SPF: pass client-ip=148.163.158.5; envelope-from=jejb@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: jejb@linux.ibm.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Mon, 2022-12-12 at 13:58 -0500, Stefan Berger wrote: > On 12/12/22 13:48, James Bottomley wrote: > > On Mon, 2022-12-12 at 11:59 -0500, Stefan Berger wrote: > > > On 12/12/22 11:38, James Bottomley wrote: [...] > > > > the kernel use of the TPM, but I'm trying to fix that.  The > > > > standard mssim server is too simplistic to do transport layer > > > > security, but like everything that does this (or rather doesn't > > > > do this), you can front it with stunnel4. > > > > > > And who or what is going to set this up? > > > > I'm not sure I understand the question.  Stunnel4 is mostly used to > > convert unencrypted proxies like imap on 143 or smtp on 25 to the > > secure version.  Most people who run servers are fairly familiar > > with using it.  It's what IBM used for encrypted migration > > initially.  You can run stunnel on both ends, or the qemu side > > could be built in using the qemu tls-creds way of doing things but > > anything running the standard MS server would have to front it with > > stunnel still. > > So it's up to libvirt to setup stunnel to support a completely > different setup than what it has for swtpm already? I don't think so, no. Libvirt doesn't usually help with server setup (witness the complexity of setting up a server side vtpm proxy) so in the case tls-creds were built in, it would just work if the object is specified. The complexity is all on the server side to front it with stunnel. James