From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Mon, 26 Jun 2023 06:15:29 +0000 (+0200)
Subject: tests: shell: coverage for simple port knocking ruleset
X-Git-Tag: v1.0.8~20
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=db6e4496fe57eceeecad6f7d8f4307ca059bc91b;p=thirdparty%2Fnftables.git

tests: shell: coverage for simple port knocking ruleset

Add a test to cover port knocking simple ruleset.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---

diff --git a/tests/shell/testcases/nft-f/0032pknock_0 b/tests/shell/testcases/nft-f/0032pknock_0
new file mode 100755
index 00000000..94fc8407
--- /dev/null
+++ b/tests/shell/testcases/nft-f/0032pknock_0
@@ -0,0 +1,34 @@
+#!/bin/bash
+
+set -e
+
+RULESET="define guarded_ports = {ssh}
+
+table inet portknock {
+        set clients_ipv4 {
+                type ipv4_addr
+                flags timeout
+        }
+
+        set candidates_ipv4 {
+                type ipv4_addr . inet_service
+                flags timeout
+        }
+
+        chain input {
+                type filter hook input priority -10; policy accept;
+
+                tcp dport 10001 add @candidates_ipv4 {ip  saddr . 10002 timeout 1s}
+                tcp dport 10002 ip  saddr . tcp dport @candidates_ipv4 add @candidates_ipv4 {ip  saddr . 10003 timeout 1s}
+                tcp dport 10003 ip  saddr . tcp dport @candidates_ipv4 add @candidates_ipv4 {ip  saddr . 10004 timeout 1s}
+                tcp dport 10004 ip  saddr . tcp dport @candidates_ipv4 add @candidates_ipv4 {ip  saddr . 10005 timeout 1s}
+                tcp dport 10005 ip  saddr . tcp dport @candidates_ipv4 add @clients_ipv4 {ip  saddr timeout 600s} log prefix \"Successful portknock: \"
+
+                tcp dport \$guarded_ports ip  saddr @clients_ipv4 counter accept
+                tcp dport \$guarded_ports ct state established,related counter accept
+
+                tcp dport \$guarded_ports reject with tcp reset
+        }
+}"
+
+$NFT -f - <<< "$RULESET"
diff --git a/tests/shell/testcases/nft-f/dumps/0032pknock_0.nft b/tests/shell/testcases/nft-f/dumps/0032pknock_0.nft
new file mode 100644
index 00000000..f29dfb28
--- /dev/null
+++ b/tests/shell/testcases/nft-f/dumps/0032pknock_0.nft
@@ -0,0 +1,25 @@
+table inet portknock {
+	set clients_ipv4 {
+		type ipv4_addr
+		size 65535
+		flags dynamic,timeout
+	}
+
+	set candidates_ipv4 {
+		type ipv4_addr . inet_service
+		size 65535
+		flags dynamic,timeout
+	}
+
+	chain input {
+		type filter hook input priority filter - 10; policy accept;
+		tcp dport 10001 add @candidates_ipv4 { ip saddr . 10002 timeout 1s }
+		tcp dport 10002 ip saddr . tcp dport @candidates_ipv4 add @candidates_ipv4 { ip saddr . 10003 timeout 1s }
+		tcp dport 10003 ip saddr . tcp dport @candidates_ipv4 add @candidates_ipv4 { ip saddr . 10004 timeout 1s }
+		tcp dport 10004 ip saddr . tcp dport @candidates_ipv4 add @candidates_ipv4 { ip saddr . 10005 timeout 1s }
+		tcp dport 10005 ip saddr . tcp dport @candidates_ipv4 add @clients_ipv4 { ip saddr timeout 10m } log prefix "Successful portknock: "
+		tcp dport 22 ip saddr @clients_ipv4 counter packets 0 bytes 0 accept
+		tcp dport 22 ct state established,related counter packets 0 bytes 0 accept
+		tcp dport 22 reject with tcp reset
+	}
+}