From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [IPv6:2a01:7e0:0:424::9]) by lore.proxmox.com (Postfix) with ESMTPS id CD84B1FF15F for ; Mon, 16 Dec 2024 11:52:26 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 2138DA371; Mon, 16 Dec 2024 11:52:35 +0100 (CET) To: pve-devel@lists.proxmox.com Date: Mon, 16 Dec 2024 11:52:31 +0100 MIME-Version: 1.0 Message-ID: List-Id: Proxmox VE development discussion List-Post: From: Alexandre Derumier via pve-devel Precedence: list Cc: Alexandre Derumier X-Mailman-Version: 2.1.29 X-BeenThere: pve-devel@lists.proxmox.com List-Subscribe: , List-Unsubscribe: , List-Archive: Reply-To: Proxmox VE development discussion List-Help: Subject: [pve-devel] [PATCH pve-docs] sdn: evpn: add a note about nf_conntrack_allow_invalid with multiple exit-nodes Content-Type: multipart/mixed; boundary="===============3140886251317160347==" Errors-To: pve-devel-bounces@lists.proxmox.com Sender: "pve-devel" --===============3140886251317160347== Content-Type: message/rfc822 Content-Disposition: inline Return-Path: X-Original-To: pve-devel@lists.proxmox.com Delivered-To: pve-devel@lists.proxmox.com 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 2C61EC3544 for ; Mon, 16 Dec 2024 11:52:34 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 07CB2A35F for ; Mon, 16 Dec 2024 11:52:34 +0100 (CET) Received: from bastiontest.odiso.net (unknown [IPv6:2a0a:1580:2000:6700::14]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS for ; Mon, 16 Dec 2024 11:52:33 +0100 (CET) Received: from formationkvm1.odiso.net (unknown [10.11.201.57]) by bastiontest.odiso.net (Postfix) with ESMTP id F0EC1862E44; Mon, 16 Dec 2024 11:52:32 +0100 (CET) Received: by formationkvm1.odiso.net (Postfix, from userid 0) id 3032111A3EF5; Mon, 16 Dec 2024 11:52:32 +0100 (CET) From: Alexandre Derumier To: pve-devel@lists.proxmox.com Subject: [PATCH pve-docs] sdn: evpn: add a note about nf_conntrack_allow_invalid with multiple exit-nodes Date: Mon, 16 Dec 2024 11:52:31 +0100 Message-Id: <20241216105231.3188808-1-alexandre.derumier@groupe-cyllene.com> X-Mailer: git-send-email 2.39.5 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 AWL 0.027 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DMARC_NONE 0.1 DMARC none policy HEADER_FROM_DIFFERENT_DOMAINS 0.248 From and EnvelopeFrom 2nd level mail domains are different KAM_DMARC_NONE 0.25 DKIM has Failed or SPF has failed on the message and the domain has no DMARC policy KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment KAM_LAZY_DOMAIN_SECURITY 1 Sending domain does not have any anti-forgery methods RDNS_NONE 0.793 Delivered to internal network by a host with no rDNS SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_NONE 0.001 SPF: sender does not publish an SPF Record reported on the forum: https://forum.proxmox.com/threads/evpn-vpls-with-multi-exit-nodes-firewall-drop-packet-with-asymetric-routing.158225 With multiple exit-nodes, traffic can be asymetric, so we need to enable invalid conntrack Signed-off-by: Alexandre Derumier --- pvesdn.adoc | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/pvesdn.adoc b/pvesdn.adoc index 5d5d27b..2683dfc 100644 --- a/pvesdn.adoc +++ b/pvesdn.adoc @@ -1159,6 +1159,15 @@ net.ipv4.conf.default.rp_filter=0 net.ipv4.conf.all.rp_filter=0 ----- +If the PVE Firewall is enabled, you should allow invalid conntrack on the +exit-nodes. + +add the following to `/etc/pve/nodes//host.fw`: + +--- +nf_conntrack_allow_invalid: 1 +--- + VXLAN IPSEC Encryption ~~~~~~~~~~~~~~~~~~~~~~ -- 2.39.5 --===============3140886251317160347== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ pve-devel mailing list pve-devel@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel --===============3140886251317160347==--