--- /dev/null	2005-01-06 03:07:43.000000000 -0800
+++ extensions/libipt_stealth.c	2005-03-08 22:28:26.875595119 -0800
@@ -0,0 +1,64 @@
+/* Shared library add-on to iptables to add stealth support.
+ * Copyright (C) 2002 Brad Spengler  <spender@grsecurity.net>
+ * This netfilter module is licensed under the GNU GPL.
+ */
+
+#include <stdio.h>
+#include <netdb.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <iptables.h>
+
+/* Function which prints out usage message. */
+static void
+help(void)
+{
+	printf("stealth v%s takes no options\n\n", IPTABLES_VERSION);
+}
+
+static struct option opts[] = {
+	{0}
+};
+
+/* Initialize the match. */
+static void
+init(struct ipt_entry_match *m, unsigned int *nfcache)
+{
+	*nfcache |= NFC_UNKNOWN;
+}
+
+static int
+parse(int c, char **argv, int invert, unsigned int *flags,
+	const struct ipt_entry *entry,
+	unsigned int *nfcache,
+	struct ipt_entry_match **match)
+{
+	return 0;
+}
+
+static void
+final_check(unsigned int flags)
+{
+	return;
+}
+
+static
+struct iptables_match stealth = {
+	.next			= NULL,
+	.name			= "stealth",
+	.version		= IPTABLES_VERSION,
+	.size			= IPT_ALIGN(0),
+	.userspacesize	= IPT_ALIGN(0),
+	.help			= &help,
+	.init			= &init, 
+	.parse			= &parse,
+	.final_check	= &final_check,
+	.print			= NULL,
+	.save			= NULL,
+	.extra_opts		= opts  
+};
+
+void _init(void)
+{
+	register_match(&stealth);
+}