feat: add debian12 scripts

- iptables_loopback.sh 			-> 4.3.2.2
- iptables_rules_them_all.sh 		-> 4.3.2.4
- iptables_outbound_established.sh 	-> 4.3.2.3
- ip6tables_loopback.sh			-> 4.3.3.2
- ip6tables_outbound_established.sh	-> 4.3.3.3
- ip6tables_rules_them_all.sh		-> 4.3.3.4
- ip6tables_default_deny_policy.sh 	-> 4.3.3.1

tests/hardening/ip6tables_rules_them_all.sh

@@ -0,0 +1,39 @@
+# shellcheck shell=bash
+# run-shellcheck
+test_audit() {
+
+    apt install -y iptables netcat-traditional
+
+    tests_is_ipv6_enabled
+    tests_get_debian_major_version
+    if [ "$CURRENT_IPV6_ENABLED" -eq 0 ] && [ "$DEB_MAJ_VER" -gt 11 ]; then
+
+        describe Prepare test
+        # shellcheck disable=2216
+        timeout 5s nc -lp 404 | true &
+
+        # not much to test here, unless working on a privileged container
+        describe Running failed test
+        register_test retvalshouldbe 1
+        # shellcheck disable=2154
+        run failed "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+        describe correcting situation
+        # just wait for timeout to expire
+        sleep 5
+
+    fi
+
+    if [ "$DEB_MAJ_VER" -gt 11 ]; then
+
+        describe Running success
+        register_test retvalshouldbe 0
+        # shellcheck disable=2154
+        run success "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+        describe clean test
+        apt remove -y iptables netcat-traditional
+
+    fi
+
+}