diff --git a/Shorewall/firewall b/Shorewall/firewall
index 08ad24239..d12c20994 100755
--- a/Shorewall/firewall
+++ b/Shorewall/firewall
@@ -3374,6 +3374,11 @@ build_common_chain() {
     if [ -n "$NEWNOTSYN" ]; then
 	run_iptables -A common -p tcp --tcp-flags ACK ACK -j ACCEPT
 	run_iptables -A common -p tcp --tcp-flags RST RST -j ACCEPT
+    else
+	for interface in `find_interfaces_by_option newnotsyn`; do
+	    run_iptables -A common -i $interface -p tcp --tcp-flags ACK ACK -j ACCEPT
+	    run_iptables -A common -i $interface -p tcp --tcp-flags RST RST -j ACCEPT
+	done
     fi
     #
     # BROADCASTS