From patchwork Thu Apr 18 21:11:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Tremer X-Patchwork-Id: 7736 Return-Path: Received: from mail01.ipfire.org (mail01.haj.ipfire.org [172.28.1.202]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) client-signature ECDSA (secp384r1)) (Client CN "mail01.haj.ipfire.org", Issuer "R3" (verified OK)) by web04.haj.ipfire.org (Postfix) with ESMTPS id 4VL9T01pMGz3wkf for ; Thu, 18 Apr 2024 21:12:04 +0000 (UTC) Received: from mail02.haj.ipfire.org (mail02.haj.ipfire.org [172.28.1.201]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) client-signature ECDSA (secp384r1)) (Client CN "mail02.haj.ipfire.org", Issuer "R3" (verified OK)) by mail01.ipfire.org (Postfix) with ESMTPS id 4VL9Sp6kRGz4Sf; Thu, 18 Apr 2024 21:11:54 +0000 (UTC) Received: from mail02.haj.ipfire.org (localhost [127.0.0.1]) by mail02.haj.ipfire.org (Postfix) with ESMTP id 4VL9Sp4LxZz32rH; Thu, 18 Apr 2024 21:11:54 +0000 (UTC) Received: from mail01.ipfire.org (mail01.haj.ipfire.org [172.28.1.202]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) client-signature ECDSA (secp384r1)) (Client CN "mail01.haj.ipfire.org", Issuer "R3" (verified OK)) by mail02.haj.ipfire.org (Postfix) with ESMTPS id 4VL9Sm1PxTz30CT for ; Thu, 18 Apr 2024 21:11:52 +0000 (UTC) Received: from michael.haj.ipfire.org (michael.haj.ipfire.org [172.28.1.242]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) client-signature ECDSA (secp384r1)) (Client CN "michael.haj.ipfire.org", Issuer "R3" (verified OK)) by mail01.ipfire.org (Postfix) with ESMTPS id 4VL9Sl4xlrz15d; Thu, 18 Apr 2024 21:11:51 +0000 (UTC) Received: by michael.haj.ipfire.org (Postfix, from userid 0) id 4VL9Sl3c6LzTgNC; Thu, 18 Apr 2024 21:11:51 +0000 (UTC) From: Michael Tremer To: development@lists.ipfire.org Subject: [PATCH 2/6] firewall: Don't filter output INVALID packets Date: Thu, 18 Apr 2024 21:11:40 +0000 Message-Id: <20240418211144.3318938-2-michael.tremer@ipfire.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240418211144.3318938-1-michael.tremer@ipfire.org> References: <20240418211144.3318938-1-michael.tremer@ipfire.org> MIME-Version: 1.0 Message-ID-Hash: D6PKZHH7KVCMKEPBH4SVHEAET2QYCA5B X-Message-ID-Hash: D6PKZHH7KVCMKEPBH4SVHEAET2QYCA5B X-MailFrom: root@michael.haj.ipfire.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Michael Tremer X-Mailman-Version: 3.3.8 Precedence: list List-Id: IPFire development talk Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: This should never cause any problems, but will cause that certain more complicated featured like SYNPROXY won't work. Signed-off-by: Michael Tremer --- src/initscripts/system/firewall | 1 - 1 file changed, 1 deletion(-) diff --git a/src/initscripts/system/firewall b/src/initscripts/system/firewall index d14466ef0..054d58c01 100644 --- a/src/initscripts/system/firewall +++ b/src/initscripts/system/firewall @@ -156,7 +156,6 @@ iptables_init() { iptables -N CTOUTPUT iptables -A CTOUTPUT -m conntrack --ctstate ESTABLISHED -j ACCEPT - iptables -A CTOUTPUT -m conntrack --ctstate INVALID -j CTINVALID iptables -A CTOUTPUT -p icmp -m conntrack --ctstate RELATED -j ACCEPT # Restore any connection marks