[git.ipfire.org] IPFire 2.x development tree branch, master, updated. 5c1af49c835921232a0312819025fb08dddae4b3

[git.ipfire.org] IPFire 2.x development tree branch, master, updated. 5c1af49c835921232a0312819025fb08dddae4b3

[Arne Fitzenreiter]

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- Log -----------------------------------------------------------------
commit 5c1af49c835921232a0312819025fb08dddae4b3
Author: Peter Müller <peter.mueller(a)ipfire.org>
Date:   Thu Feb 17 20:16:02 2022 +0000

    firewall: Add proper logging prefix for conntrack INVALID hits
    
    Fixes: #12778
    
    Signed-off-by: Peter Müller <peter.mueller(a)ipfire.org>

-----------------------------------------------------------------------

Summary of changes:
 src/initscripts/system/firewall | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

Difference in files:
diff --git a/src/initscripts/system/firewall b/src/initscripts/system/firewall
index fc355cd5d..2f4b4e30e 100644
--- a/src/initscripts/system/firewall
+++ b/src/initscripts/system/firewall
@@ -119,9 +119,13 @@ iptables_init() {
 	iptables -A FORWARD -p tcp -j BADTCP
 
 	# Connection tracking chains
+	iptables -N CTINVALID
+	iptables -A CTINVALID  -m limit --limit 10/second -j LOG  --log-prefix "DROP_CTINVALID "
+	iptables -A CTINVALID  -j DROP -m comment --comment "DROP_CTINVALID"
+
 	iptables -N CONNTRACK
 	iptables -A CONNTRACK -m conntrack --ctstate ESTABLISHED -j ACCEPT
-	iptables -A CONNTRACK -m conntrack --ctstate INVALID -j LOG_DROP
+	iptables -A CONNTRACK -m conntrack --ctstate INVALID -j CTINVALID
 	iptables -A CONNTRACK -p icmp -m conntrack --ctstate RELATED -j ACCEPT
 
 	# Restore any connection marks


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