From: Michael Tremer <michael.tremer@ipfire.org>
To: development@lists.ipfire.org
Subject: [PATCH 6/6] sysctl: Conntrack: Disable picking up loose TCP connections
Date: Thu, 18 Apr 2024 21:11:44 +0000 [thread overview]
Message-ID: <20240418211144.3318938-6-michael.tremer@ipfire.org> (raw)
In-Reply-To: <20240418211144.3318938-1-michael.tremer@ipfire.org>
[-- Attachment #1: Type: text/plain, Size: 615 bytes --]
Signed-off-by: Michael Tremer <michael.tremer(a)ipfire.org>
---
config/etc/sysctl.conf | 3 +++
1 file changed, 3 insertions(+)
diff --git a/config/etc/sysctl.conf b/config/etc/sysctl.conf
index 31a220e38..e35ee0dc4 100644
--- a/config/etc/sysctl.conf
+++ b/config/etc/sysctl.conf
@@ -35,6 +35,9 @@ net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.all.accept_redirects = 0
net.ipv6.conf.default.accept_redirects = 0
+# Do not try to pick up existing TCP connections in conntrack
+net.netfilter.nf_conntrack_tcp_loose = 0
+
# Enable netfilter accounting
net.netfilter.nf_conntrack_acct = 1
--
2.39.2
prev parent reply other threads:[~2024-04-18 21:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-18 21:11 [PATCH 1/6] firewall: Split CONNTRACK chain Michael Tremer
2024-04-18 21:11 ` [PATCH 2/6] firewall: Don't filter output INVALID packets Michael Tremer
2024-04-18 21:11 ` [PATCH 3/6] firewall: Enable SYNPROXY for untracked packets Michael Tremer
2024-04-18 21:11 ` [PATCH 4/6] firewall.cgi: Add a checkbox to enable SYN flood protection Michael Tremer
2024-04-18 21:11 ` [PATCH 5/6] firewall: Implement generating SYNPROXY rules Michael Tremer
2024-04-18 21:11 ` Michael Tremer [this message]
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