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 20BF38538F for ; Fri, 17 Dec 2021 14:10:38 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id F414D2B82B for ; Fri, 17 Dec 2021 14:10:07 +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 753542B802 for ; Fri, 17 Dec 2021 14:10:03 +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 45AF845443 for ; Fri, 17 Dec 2021 14:00:29 +0100 (CET) From: =?UTF-8?q?Fabian=20Gr=C3=BCnbichler?= To: pmg-devel@lists.proxmox.com Date: Fri, 17 Dec 2021 14:00:16 +0100 Message-Id: <20211217130016.559140-3-f.gruenbichler@proxmox.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211217130016.559140-1-f.gruenbichler@proxmox.com> References: <20211217125733.548305-1-f.gruenbichler@proxmox.com> <20211217130016.559140-1-f.gruenbichler@proxmox.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 AWL 0.239 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 Subject: [pmg-devel] [PATCH pmg-docs] pmgproxy: document newly added options X-BeenThere: pmg-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox Mail Gateway development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Dec 2021 13:10:38 -0000 adapted from pve-docs -> pveproxy Signed-off-by: Fabian Grünbichler --- pmgproxy.adoc | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) diff --git a/pmgproxy.adoc b/pmgproxy.adoc index 6e48fba..101f269 100644 --- a/pmgproxy.adoc +++ b/pmgproxy.adoc @@ -125,7 +125,10 @@ should set a maintenance window to bring this change into effect. SSL Cipher Suite ---------------- -You can define the cipher list in `/etc/default/pmgproxy`, for example: +You can define the cipher list in `/etc/default/pmgproxy`, via the `CIPHERS` +(TLS <= 1.2) and `CIPHERSUITES` (TLS >= 1.3) keys. + +For example: CIPHERS="ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256" @@ -141,6 +144,25 @@ by disabling the HONOR_CIPHER_ORDER option in `/etc/default/pmgproxy`: HONOR_CIPHER_ORDER=0 +Supported TLS versions +---------------------- + +The insecure SSL versions 2 and 3 are unconditionally disabled for `pmgproxy`. +TLS versions below 1.1 are disabled by default on recent OpenSSL versions, +which is honored by `pmgproxy` (see `/etc/ssl/openssl.cnf`). + +To disable TLS version 1.2, set the following in `/etc/default/pmgproxy`: + + DISABLE_TLS_1_2=1 + +or, respectively, to disable TLS version 1.3: + + DISABLE_TLS_1_3=1 + +NOTE: Unless there is a specific reason to do so, it is not recommended to +manually adjust the supported TLS versions. + + Diffie-Hellman Parameters ------------------------- -- 2.30.2