From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id A0DD66A1AF for ; Sat, 26 Mar 2022 20:05:27 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 94FB7195CC for ; Sat, 26 Mar 2022 20:04:57 +0100 (CET) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [94.136.29.106]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS id 71DA3195BB for ; Sat, 26 Mar 2022 20:04:56 +0100 (CET) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id 2879246F84; Sat, 26 Mar 2022 19:58:54 +0100 (CET) Date: Sat, 26 Mar 2022 19:58:53 +0100 (CET) From: Dietmar Maurer To: Proxmox VE user list , Jean-Laurent Ivars , pve-user@pve.proxmox.com Message-ID: <248457702.2699.1648321133271@webmail.proxmox.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Priority: 3 Importance: Normal X-Mailer: Open-Xchange Mailer v7.10.5-Rev38 X-Originating-Client: open-xchange-appsuite X-SPAM-LEVEL: Spam detection results: 0 AWL 0.455 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record T_SCC_BODY_TEXT_LINE -0.01 - Subject: Re: [PVE-User] Security Proxmox Backup Server X-BeenThere: pve-user@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE user list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 26 Mar 2022 19:05:27 -0000 > Let=E2=80=99s say my cluster get hacked ! > Is there a way it compromises the backups ? First, you can use the PBS access control system to limit access... A reasonable setup would also: 1.) sync the backups to another physical location 2.) make tape backups an store the tape offsite