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-rw-r--r--target/linux/generic-2.6/patches-2.6.23/101-netfilter_layer7_pktmatch.patch113
-rw-r--r--target/linux/generic-2.6/patches-2.6.23/170-netfilter_chaostables_0.8.patch (renamed from target/linux/generic-2.6/patches-2.6.23/170-netfilter_chaostables.patch)652
-rw-r--r--target/linux/generic-2.6/patches-2.6.23/171-netfilter_tarpit.patch20
3 files changed, 397 insertions, 388 deletions
diff --git a/target/linux/generic-2.6/patches-2.6.23/101-netfilter_layer7_pktmatch.patch b/target/linux/generic-2.6/patches-2.6.23/101-netfilter_layer7_pktmatch.patch
new file mode 100644
index 0000000..2574543
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.23/101-netfilter_layer7_pktmatch.patch
@@ -0,0 +1,113 @@
+Index: linux-2.6.23.16/include/linux/netfilter/xt_layer7.h
+===================================================================
+--- linux-2.6.23.16.orig/include/linux/netfilter/xt_layer7.h
++++ linux-2.6.23.16/include/linux/netfilter/xt_layer7.h
+@@ -8,6 +8,7 @@ struct xt_layer7_info {
+ char protocol[MAX_PROTOCOL_LEN];
+ char pattern[MAX_PATTERN_LEN];
+ u_int8_t invert;
++ u_int8_t pkt;
+ };
+
+ #endif /* _XT_LAYER7_H */
+Index: linux-2.6.23.16/net/netfilter/xt_layer7.c
+===================================================================
+--- linux-2.6.23.16.orig/net/netfilter/xt_layer7.c
++++ linux-2.6.23.16/net/netfilter/xt_layer7.c
+@@ -297,34 +297,36 @@ static int match_no_append(struct nf_con
+ }
+
+ /* add the new app data to the conntrack. Return number of bytes added. */
+-static int add_data(struct nf_conn * master_conntrack,
+- char * app_data, int appdatalen)
++static int add_datastr(char *target, int offset, char *app_data, int len)
+ {
+ int length = 0, i;
+- int oldlength = master_conntrack->layer7.app_data_len;
+-
+- /* This is a fix for a race condition by Deti Fliegl. However, I'm not
+- clear on whether the race condition exists or whether this really
+- fixes it. I might just be being dense... Anyway, if it's not really
+- a fix, all it does is waste a very small amount of time. */
+- if(!master_conntrack->layer7.app_data) return 0;
++
++ if (!target) return 0;
+
+ /* Strip nulls. Make everything lower case (our regex lib doesn't
+ do case insensitivity). Add it to the end of the current data. */
+- for(i = 0; i < maxdatalen-oldlength-1 &&
+- i < appdatalen; i++) {
++ for(i = 0; i < maxdatalen-offset-1 && i < len; i++) {
+ if(app_data[i] != '\0') {
+ /* the kernel version of tolower mungs 'upper ascii' */
+- master_conntrack->layer7.app_data[length+oldlength] =
++ target[length+offset] =
+ isascii(app_data[i])?
+ tolower(app_data[i]) : app_data[i];
+ length++;
+ }
+ }
++ target[length+offset] = '\0';
++
++ return length;
++}
+
+- master_conntrack->layer7.app_data[length+oldlength] = '\0';
+- master_conntrack->layer7.app_data_len = length + oldlength;
++/* add the new app data to the conntrack. Return number of bytes added. */
++static int add_data(struct nf_conn * master_conntrack,
++ char * app_data, int appdatalen)
++{
++ int length;
+
++ length = add_datastr(master_conntrack->layer7.app_data, master_conntrack->layer7.app_data_len, app_data, appdatalen);
++ master_conntrack->layer7.app_data_len += length;
+ return length;
+ }
+
+@@ -411,7 +413,7 @@ match(const struct sk_buff *skbin,
+ const struct xt_layer7_info * info = matchinfo;
+ enum ip_conntrack_info master_ctinfo, ctinfo;
+ struct nf_conn *master_conntrack, *conntrack;
+- unsigned char * app_data;
++ unsigned char *app_data, *tmp_data;
+ unsigned int pattern_result, appdatalen;
+ regexp * comppattern;
+
+@@ -439,8 +441,8 @@ match(const struct sk_buff *skbin,
+ master_conntrack = master_ct(master_conntrack);
+
+ /* if we've classified it or seen too many packets */
+- if(TOTAL_PACKETS > num_packets ||
+- master_conntrack->layer7.app_proto) {
++ if(!info->pkt && (TOTAL_PACKETS > num_packets ||
++ master_conntrack->layer7.app_proto)) {
+
+ pattern_result = match_no_append(conntrack, master_conntrack,
+ ctinfo, master_ctinfo, info);
+@@ -473,6 +475,25 @@ match(const struct sk_buff *skbin,
+ /* the return value gets checked later, when we're ready to use it */
+ comppattern = compile_and_cache(info->pattern, info->protocol);
+
++ if (info->pkt) {
++ tmp_data = kmalloc(maxdatalen, GFP_ATOMIC);
++ if(!tmp_data){
++ if (net_ratelimit())
++ printk(KERN_ERR "layer7: out of memory in match, bailing.\n");
++ return info->invert;
++ }
++
++ tmp_data[0] = '\0';
++ add_datastr(tmp_data, 0, app_data, appdatalen);
++ pattern_result = ((comppattern && regexec(comppattern, tmp_data)) ? 1 : 0);
++
++ kfree(tmp_data);
++ tmp_data = NULL;
++ spin_unlock_bh(&l7_lock);
++
++ return (pattern_result ^ info->invert);
++ }
++
+ /* On the first packet of a connection, allocate space for app data */
+ if(TOTAL_PACKETS == 1 && !skb->cb[0] &&
+ !master_conntrack->layer7.app_data){
diff --git a/target/linux/generic-2.6/patches-2.6.23/170-netfilter_chaostables.patch b/target/linux/generic-2.6/patches-2.6.23/170-netfilter_chaostables_0.8.patch
index cfc0092..ad9e059 100644
--- a/target/linux/generic-2.6/patches-2.6.23/170-netfilter_chaostables.patch
+++ b/target/linux/generic-2.6/patches-2.6.23/170-netfilter_chaostables_0.8.patch
@@ -1,17 +1,17 @@
-Index: linux-2.6.23/include/linux/netfilter/oot_conntrack.h
+Index: linux-2.6.23.16/include/linux/netfilter/oot_conntrack.h
===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.23/include/linux/netfilter/oot_conntrack.h 2007-10-10 13:52:59.000000000 +0800
+--- /dev/null
++++ linux-2.6.23.16/include/linux/netfilter/oot_conntrack.h
@@ -0,0 +1,5 @@
+#if defined(CONFIG_IP_NF_CONNTRACK) || defined(CONFIG_IP_NF_CONNTRACK_MODULE)
+# include <linux/netfilter_ipv4/ip_conntrack.h>
+#else /* linux-2.6.20+ */
+# include <net/netfilter/nf_nat_rule.h>
+#endif
-Index: linux-2.6.23/include/linux/netfilter/oot_trans.h
+Index: linux-2.6.23.16/include/linux/netfilter/oot_trans.h
===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.23/include/linux/netfilter/oot_trans.h 2007-10-10 13:52:59.000000000 +0800
+--- /dev/null
++++ linux-2.6.23.16/include/linux/netfilter/oot_trans.h
@@ -0,0 +1,14 @@
+/* Out of tree workarounds */
+#include <linux/version.h>
@@ -27,42 +27,42 @@ Index: linux-2.6.23/include/linux/netfilter/oot_trans.h
+# define tcp_v4_check(tcph, tcph_sz, s, d, csp) \
+ tcp_v4_check((tcph_sz), (s), (d), (csp))
+#endif
-Index: linux-2.6.23/include/linux/netfilter/xt_CHAOS.h
+Index: linux-2.6.23.16/include/linux/netfilter/xt_CHAOS.h
===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.23/include/linux/netfilter/xt_CHAOS.h 2007-10-10 13:52:59.000000000 +0800
+--- /dev/null
++++ linux-2.6.23.16/include/linux/netfilter/xt_CHAOS.h
@@ -0,0 +1,14 @@
-+#ifndef _LINUX_XT_CHAOS_H
-+#define _LINUX_XT_CHAOS_H 1
++#ifndef _LINUX_NETFILTER_XT_CHAOS_H
++#define _LINUX_NETFILTER_XT_CHAOS_H 1
+
-+enum xt_chaos_variant {
++enum xt_chaos_target_variant {
+ XTCHAOS_NORMAL,
+ XTCHAOS_TARPIT,
+ XTCHAOS_DELUDE,
+};
+
-+struct xt_chaos_info {
-+ enum xt_chaos_variant variant;
++struct xt_chaos_target_info {
++ uint8_t variant;
+};
+
-+#endif /* _LINUX_XT_CHAOS_H */
-Index: linux-2.6.23/include/linux/netfilter/xt_portscan.h
++#endif /* _LINUX_NETFILTER_XT_CHAOS_H */
+Index: linux-2.6.23.16/include/linux/netfilter/xt_portscan.h
===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.23/include/linux/netfilter/xt_portscan.h 2007-10-10 13:52:59.000000000 +0800
+--- /dev/null
++++ linux-2.6.23.16/include/linux/netfilter/xt_portscan.h
@@ -0,0 +1,8 @@
-+#ifndef _LINUX_XT_PORTSCAN_H
-+#define _LINUX_XT_PORTSCAN_H 1
++#ifndef _LINUX_NETFILTER_XT_PORTSCAN_H
++#define _LINUX_NETFILTER_XT_PORTSCAN_H 1
+
-+struct xt_portscan_info {
-+ unsigned int match_stealth, match_syn, match_cn, match_gr;
++struct xt_portscan_match_info {
++ uint8_t match_stealth, match_syn, match_cn, match_gr;
+};
+
-+#endif /* _LINUX_XT_PORTSCAN_H */
-Index: linux-2.6.23/net/netfilter/find_match.c
++#endif /* _LINUX_NETFILTER_XT_PORTSCAN_H */
+Index: linux-2.6.23.16/net/netfilter/find_match.c
===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.23/net/netfilter/find_match.c 2007-10-10 13:52:59.000000000 +0800
+--- /dev/null
++++ linux-2.6.23.16/net/netfilter/find_match.c
@@ -0,0 +1,39 @@
+/*
+ xt_request_find_match
@@ -95,7 +95,7 @@ Index: linux-2.6.23/net/netfilter/find_match.c
+
+ match = try_then_request_module(xt_find_match(af, name, revision),
+ "%st_%s", xt_prefix[af], name);
-+ if(IS_ERR(match) || match == NULL)
++ if (IS_ERR(match) || match == NULL)
+ return NULL;
+
+ return match;
@@ -103,11 +103,11 @@ Index: linux-2.6.23/net/netfilter/find_match.c
+
+/* In case it goes into mainline, let this out-of-tree package compile */
+#define xt_request_find_match xt_request_find_match_lo
-Index: linux-2.6.23/net/netfilter/Kconfig
+Index: linux-2.6.23.16/net/netfilter/Kconfig
===================================================================
---- linux-2.6.23.orig/net/netfilter/Kconfig 2007-10-10 04:31:38.000000000 +0800
-+++ linux-2.6.23/net/netfilter/Kconfig 2007-10-10 13:53:04.000000000 +0800
-@@ -265,6 +265,14 @@
+--- linux-2.6.23.16.orig/net/netfilter/Kconfig
++++ linux-2.6.23.16/net/netfilter/Kconfig
+@@ -265,6 +265,14 @@ config NETFILTER_XTABLES
# alphabetically ordered list of targets
@@ -122,7 +122,7 @@ Index: linux-2.6.23/net/netfilter/Kconfig
config NETFILTER_XT_TARGET_CLASSIFY
tristate '"CLASSIFY" target support'
depends on NETFILTER_XTABLES
-@@ -292,6 +300,14 @@
+@@ -292,6 +300,14 @@ config NETFILTER_XT_TARGET_CONNMARK
<file:Documentation/kbuild/modules.txt>. The module will be called
ipt_CONNMARK.ko. If unsure, say `N'.
@@ -137,7 +137,7 @@ Index: linux-2.6.23/net/netfilter/Kconfig
config NETFILTER_XT_TARGET_DSCP
tristate '"DSCP" target support'
depends on NETFILTER_XTABLES
-@@ -556,6 +572,14 @@
+@@ -556,6 +572,14 @@ config NETFILTER_XT_MATCH_POLICY
To compile it as a module, choose M here. If unsure, say N.
@@ -152,42 +152,38 @@ Index: linux-2.6.23/net/netfilter/Kconfig
config NETFILTER_XT_MATCH_MULTIPORT
tristate "Multiple port match support"
depends on NETFILTER_XTABLES
-Index: linux-2.6.23/net/netfilter/Makefile
+Index: linux-2.6.23.16/net/netfilter/Makefile
===================================================================
---- linux-2.6.23.orig/net/netfilter/Makefile 2007-10-10 04:31:38.000000000 +0800
-+++ linux-2.6.23/net/netfilter/Makefile 2007-10-10 13:52:59.000000000 +0800
-@@ -38,8 +38,10 @@
- obj-$(CONFIG_NETFILTER_XTABLES) += x_tables.o xt_tcpudp.o
-
- # targets
+--- linux-2.6.23.16.orig/net/netfilter/Makefile
++++ linux-2.6.23.16/net/netfilter/Makefile
+@@ -49,6 +49,8 @@ obj-$(CONFIG_NETFILTER_XT_TARGET_TRACE)
+ obj-$(CONFIG_NETFILTER_XT_TARGET_SECMARK) += xt_SECMARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_TCPMSS) += xt_TCPMSS.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CONNSECMARK) += xt_CONNSECMARK.o
+obj-$(CONFIG_NETFILTER_XT_TARGET_CHAOS) += xt_CHAOS.o
- obj-$(CONFIG_NETFILTER_XT_TARGET_CLASSIFY) += xt_CLASSIFY.o
- obj-$(CONFIG_NETFILTER_XT_TARGET_CONNMARK) += xt_CONNMARK.o
+obj-$(CONFIG_NETFILTER_XT_TARGET_DELUDE) += xt_DELUDE.o
- obj-$(CONFIG_NETFILTER_XT_TARGET_DSCP) += xt_DSCP.o
- obj-$(CONFIG_NETFILTER_XT_TARGET_MARK) += xt_MARK.o
- obj-$(CONFIG_NETFILTER_XT_TARGET_NFQUEUE) += xt_NFQUEUE.o
-@@ -66,6 +68,7 @@
- obj-$(CONFIG_NETFILTER_XT_MATCH_MARK) += xt_mark.o
- obj-$(CONFIG_NETFILTER_XT_MATCH_MULTIPORT) += xt_multiport.o
- obj-$(CONFIG_NETFILTER_XT_MATCH_POLICY) += xt_policy.o
+
+ # matches
+ obj-$(CONFIG_NETFILTER_XT_MATCH_COMMENT) += xt_comment.o
+@@ -78,3 +80,4 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_TCPMSS)
+ obj-$(CONFIG_NETFILTER_XT_MATCH_PHYSDEV) += xt_physdev.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_U32) += xt_u32.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_HASHLIMIT) += xt_hashlimit.o
+obj-$(CONFIG_NETFILTER_XT_MATCH_PORTSCAN) += xt_portscan.o
- obj-$(CONFIG_NETFILTER_XT_MATCH_PKTTYPE) += xt_pkttype.o
- obj-$(CONFIG_NETFILTER_XT_MATCH_QUOTA) += xt_quota.o
- obj-$(CONFIG_NETFILTER_XT_MATCH_REALM) += xt_realm.o
-Index: linux-2.6.23/net/netfilter/xt_CHAOS.c
+Index: linux-2.6.23.16/net/netfilter/xt_CHAOS.c
===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.23/net/netfilter/xt_CHAOS.c 2007-10-10 13:52:59.000000000 +0800
-@@ -0,0 +1,205 @@
+--- /dev/null
++++ linux-2.6.23.16/net/netfilter/xt_CHAOS.c
+@@ -0,0 +1,200 @@
+/*
-+ CHAOS target for netfilter
-+
-+ Copyright © Jan Engelhardt <jengelh [at] gmx de>, 2006 - 2007
-+ This program is free software; you can redistribute it and/or modify
-+ it under the terms of the GNU General Public License version 2 as
-+ published by the Free Software Foundation.
-+*/
++ * CHAOS target for netfilter
++ * Copyright © CC Computer Consultants GmbH, 2006 - 2007
++ * Contact: Jan Engelhardt <jengelh@computergmbh.de>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License; either version
++ * 2 or 3 as published by the Free Software Foundation.
++ */
+#include <linux/icmp.h>
+#include <linux/in.h>
+#include <linux/ip.h>
@@ -198,9 +194,17 @@ Index: linux-2.6.23/net/netfilter/xt_CHAOS.c
+#include <linux/netfilter/xt_tcpudp.h>
+#include <linux/netfilter_ipv4/ipt_REJECT.h>
+#include <net/ip.h>
-+#include <linux/netfilter/xt_CHAOS.h>
-+#include "find_match.c"
-+#include <linux/netfilter/oot_trans.h>
++#if defined(_LOCAL)
++# include "xt_CHAOS.h"
++# include "find_match.c"
++#elif defined(CONFIG_NETFILTER_XT_TARGET_CHAOS) || \
++ defined(CONFIG_NETFILTER_XT_TARGET_CHAOS_MODULE)
++# include <linux/netfilter/xt_CHAOS.h>
++# include "find_match.c"
++#else
++# include "xt_CHAOS.h"
++# include "find_match.c"
++#endif
+#define PFX KBUILD_MODNAME ": "
+
+/* Module parameters */
@@ -226,111 +230,97 @@ Index: linux-2.6.23/net/netfilter/xt_CHAOS.c
+};
+
+/* CHAOS functions */
-+static void xt_chaos_total(const struct xt_chaos_info *info,
++static void xt_chaos_total(const struct xt_chaos_target_info *info,
+ struct sk_buff **pskb, const struct net_device *in,
+ const struct net_device *out, unsigned int hooknum)
+{
-+ const int protoff = ip_hdrlen(*pskb);
-+ const int offset = ntohs(ip_hdr(*pskb)->frag_off) & IP_OFFSET;
++ const struct iphdr *iph = ip_hdr(*pskb);
++ const int protoff = 4 * iph->ihl;
++ const int offset = ntohs(iph->frag_off) & IP_OFFSET;
+ const struct xt_target *destiny;
-+ bool hotdrop = false;
-+ int ret;
++ bool hotdrop = false, ret;
+
+ ret = xm_tcp->match(*pskb, in, out, xm_tcp, &tcp_params,
+ offset, protoff, &hotdrop);
-+ if(!ret || hotdrop || (unsigned int)net_random() > delude_percentage)
++ if (!ret || hotdrop || (unsigned int)net_random() > delude_percentage)
+ return;
+
+ destiny = (info->variant == XTCHAOS_TARPIT) ? xt_tarpit : xt_delude;
-+#ifdef HAVE_TARGUSERINFO
-+ destiny->target(pskb, in, out, hooknum, destiny, NULL, NULL);
-+#else
+ destiny->target(pskb, in, out, hooknum, destiny, NULL);
-+#endif
+ return;
+}
+
-+static unsigned int xt_chaos_target(struct sk_buff **pskb,
++static unsigned int chaos_tg(struct sk_buff **pskb,
+ const struct net_device *in, const struct net_device *out,
-+ unsigned int hooknum, const struct xt_target *target, const void *targinfo
-+#ifdef HAVE_TARGUSERINFO
-+ ,
-+ void *userinfo
-+#endif
-+ )
++ unsigned int hooknum, const struct xt_target *target, const void *targinfo)
+{
-+ /* Equivalent to:
++ /*
++ * Equivalent to:
+ * -A chaos -m statistic --mode random --probability \
+ * $reject_percentage -j REJECT --reject-with host-unreach;
+ * -A chaos -p tcp -m statistic --mode random --probability \
+ * $delude_percentage -j DELUDE;
+ * -A chaos -j DROP;
+ */
-+ const struct xt_chaos_info *info = targinfo;
++ const struct xt_chaos_target_info *info = targinfo;
++ const struct iphdr *iph = ip_hdr(*pskb);
+
-+ if((unsigned int)net_random() <= reject_percentage)
-+#ifdef HAVE_TARGUSERINFO
-+ return xt_reject->target(pskb, in, out, hooknum, target,
-+ &reject_params, userinfo);
-+#else
++ if ((unsigned int)net_random() <= reject_percentage)
+ return xt_reject->target(pskb, in, out, hooknum, target,
+ &reject_params);
-+#endif
+
+ /* TARPIT/DELUDE may not be called from the OUTPUT chain */
-+ if(ip_hdr(*pskb)->protocol == IPPROTO_TCP &&
-+ info->variant != XTCHAOS_NORMAL && hooknum != NF_IP_LOCAL_OUT)
++ if (iph->protocol == IPPROTO_TCP &&
++ info->variant != XTCHAOS_NORMAL && hooknum != NF_IP_LOCAL_OUT)
+ xt_chaos_total(info, pskb, in, out, hooknum);
+
+ return NF_DROP;
+}
+
-+static bool xt_chaos_checkentry(const char *tablename, const void *entry,
-+ const struct xt_target *target, void *targinfo,
-+#ifdef HAVE_TARGINFOSIZE
-+ unsigned int targinfosize,
-+#endif
-+ unsigned int hook_mask)
++static bool chaos_tg_check(const char *tablename, const void *entry,
++ const struct xt_target *target, void *targinfo, unsigned int hook_mask)
+{
-+ const struct xt_chaos_info *info = targinfo;
-+ if(info->variant == XTCHAOS_DELUDE && !have_delude) {
++ const struct xt_chaos_target_info *info = targinfo;
++
++ if (info->variant == XTCHAOS_DELUDE && !have_delude) {
+ printk(KERN_WARNING PFX "Error: Cannot use --delude when "
+ "DELUDE module not available\n");
+ return false;
+ }
-+ if(info->variant == XTCHAOS_TARPIT && !have_tarpit) {
++ if (info->variant == XTCHAOS_TARPIT && !have_tarpit) {
+ printk(KERN_WARNING PFX "Error: Cannot use --tarpit when "
+ "TARPIT module not available\n");
+ return false;
+ }
++
+ return true;
+}
+
-+static struct xt_target xt_chaos_info = {
++static struct xt_target chaos_tg_reg = {
+ .name = "CHAOS",
-+ .target = xt_chaos_target,
-+ .checkentry = xt_chaos_checkentry,
++ .family = AF_INET,
+ .table = "filter",
-+ .targetsize = sizeof(struct xt_chaos_info),
+ .hooks = (1 << NF_IP_LOCAL_IN) | (1 << NF_IP_FORWARD) |
+ (1 << NF_IP_LOCAL_OUT),
-+ .family = AF_INET,
++ .checkentry = chaos_tg_check,
++ .target = chaos_tg,
++ .targetsize = sizeof(struct xt_chaos_target_info),
+ .me = THIS_MODULE,
+};
+
-+static int __init xt_chaos_init(void)
++static int __init chaos_tg_init(void)
+{
+ int ret = -EINVAL;
+
+ xm_tcp = xt_request_find_match(AF_INET, "tcp", 0);
-+ if(xm_tcp == NULL) {
++ if (xm_tcp == NULL) {
+ printk(KERN_WARNING PFX "Error: Could not find or load "
+ "\"tcp\" match\n");
+ return -EINVAL;
+ }
+
+ xt_reject = xt_request_find_target(AF_INET, "REJECT", 0);
-+ if(xt_reject == NULL) {
++ if (xt_reject == NULL) {
+ printk(KERN_WARNING PFX "Error: Could not find or load "
+ "\"REJECT\" target\n");
+ goto out2;
@@ -338,17 +328,17 @@ Index: linux-2.6.23/net/netfilter/xt_CHAOS.c
+
+ xt_tarpit = xt_request_find_target(AF_INET, "TARPIT", 0);
+ have_tarpit = xt_tarpit != NULL;
-+ if(!have_tarpit)
++ if (!have_tarpit)
+ printk(KERN_WARNING PFX "Warning: Could not find or load "
+ "\"TARPIT\" target\n");
+
+ xt_delude = xt_request_find_target(AF_INET, "DELUDE", 0);
+ have_delude = xt_delude != NULL;
-+ if(!have_delude)
++ if (!have_delude)
+ printk(KERN_WARNING PFX "Warning: Could not find or load "
+ "\"DELUDE\" target\n");
+
-+ if((ret = xt_register_target(&xt_chaos_info)) != 0) {
++ if ((ret = xt_register_target(&chaos_tg_reg)) != 0) {
+ printk(KERN_WARNING PFX "xt_register_target returned "
+ "error %d\n", ret);
+ goto out3;
@@ -357,9 +347,9 @@ Index: linux-2.6.23/net/netfilter/xt_CHAOS.c
+ return 0;
+
+ out3:
-+ if(have_delude)
++ if (have_delude)
+ module_put(xt_delude->me);
-+ if(have_tarpit)
++ if (have_tarpit)
+ module_put(xt_tarpit->me);
+ module_put(xt_reject->me);
+ out2:
@@ -367,132 +357,67 @@ Index: linux-2.6.23/net/netfilter/xt_CHAOS.c
+ return ret;
+}
+
-+static void __exit xt_chaos_exit(void)
++static void __exit chaos_tg_exit(void)
+{
-+ xt_unregister_target(&xt_chaos_info);
++ xt_unregister_target(&chaos_tg_reg);
+ module_put(xm_tcp->me);
+ module_put(xt_reject->me);
-+ if(have_delude)
++ if (have_delude)
+ module_put(xt_delude->me);
-+ if(have_tarpit)
++ if (have_tarpit)
+ module_put(xt_tarpit->me);
+ return;
+}
+
-+module_init(xt_chaos_init);
-+module_exit(xt_chaos_exit);
-+MODULE_AUTHOR("Jan Engelhardt <jengelh@gmx.de>");
-+MODULE_DESCRIPTION("netfilter CHAOS target");
++module_init(chaos_tg_init);
++module_exit(chaos_tg_exit);
++MODULE_AUTHOR("Jan Engelhardt <jengelh@computergmbh.de>");
++MODULE_DESCRIPTION("netfilter \"CHAOS\" target");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("ipt_CHAOS");
-Index: linux-2.6.23/net/netfilter/xt_DELUDE.c
+Index: linux-2.6.23.16/net/netfilter/xt_DELUDE.c
===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.23/net/netfilter/xt_DELUDE.c 2007-10-10 13:52:59.000000000 +0800
-@@ -0,0 +1,288 @@
+--- /dev/null
++++ linux-2.6.23.16/net/netfilter/xt_DELUDE.c
+@@ -0,0 +1,197 @@
+/*
-+ DELUDE target
-+ Copyright © Jan Engelhardt <jengelh [at] gmx de>, 2007
-+
-+ Based upon linux-2.6.18.5/net/ipv4/netfilter/ipt_REJECT.c:
-+ (C) 1999-2001 Paul `Rusty' Russell
-+ (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
-+
-+ xt_DELUDE acts like REJECT, but does reply with SYN-ACK on SYN.
-+
-+ This program is free software; you can redistribute it and/or modify
-+ it under the terms of the GNU General Public License version 2 as
-+ published by the Free Software Foundation.
-+*/
++ * DELUDE target
++ * Copyright © CC Computer Consultants GmbH, 2007
++ * Contact: Jan Engelhardt <jengelh@computergmbh.de>
++ *
++ * Based upon linux-2.6.18.5/net/ipv4/netfilter/ipt_REJECT.c:
++ * (C) 1999-2001 Paul `Rusty' Russell
++ * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
++ *
++ * xt_DELUDE acts like REJECT, but does reply with SYN-ACK on SYN.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
+#include <linux/module.h>
+#include <linux/skbuff.h>
+#include <linux/ip.h>
-+#include <linux/random.h>
+#include <linux/tcp.h>
-+#include <linux/udp.h>
-+#include <linux/icmp.h>
-+#include <net/icmp.h>
-+#include <net/ip.h>
-+#include <net/tcp.h>
-+#include <net/route.h>
-+#include <net/dst.h>
-+#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter/x_tables.h>
+#ifdef CONFIG_BRIDGE_NETFILTER
+# include <linux/netfilter_bridge.h>
+#endif
-+#include <linux/netfilter/oot_trans.h>
++#include <net/tcp.h>
+#define PFX KBUILD_MODNAME ": "
+
-+static inline struct rtable *route_reverse(struct sk_buff *skb,
-+ struct tcphdr *tcph, int hook)
++static void delude_send_reset(struct sk_buff *oldskb, unsigned int hook)
+{
-+ struct iphdr *iph = ip_hdr(skb);
-+ struct dst_entry *odst;
-+ struct flowi fl = {};
-+ struct rtable *rt;
-+
-+ /* We don't require ip forwarding to be enabled to be able to
-+ * send a RST reply for bridged traffic. */
-+ if (hook != NF_IP_FORWARD
-+#ifdef CONFIG_BRIDGE_NETFILTER
-+ || (skb->nf_bridge && skb->nf_bridge->mask & BRNF_BRIDGED)
-+#endif
-+ ) {
-+ fl.nl_u.ip4_u.daddr = iph->saddr;
-+ if (hook == NF_IP_LOCAL_IN)
-+ fl.nl_u.ip4_u.saddr = iph->daddr;
-+ fl.nl_u.ip4_u.tos = RT_TOS(iph->tos);
-+
-+ if (ip_route_output_key(&rt, &fl) != 0)
-+ return NULL;
-+ } else {
-+ /* non-local src, find valid iif to satisfy
-+ * rp-filter when calling ip_route_input. */
-+ fl.nl_u.ip4_u.daddr = iph->daddr;
-+ if (ip_route_output_key(&rt, &fl) != 0)
-+ return NULL;
-+
-+ odst = skb->dst;
-+ if (ip_route_input(skb, iph->saddr, iph->daddr,
-+ RT_TOS(iph->tos), rt->u.dst.dev) != 0) {
-+ dst_release(&rt->u.dst);
-+ return NULL;
-+ }
-+ dst_release(&rt->u.dst);
-+ rt = (struct rtable *)skb->dst;
-+ skb->dst = odst;
-+
-+ fl.nl_u.ip4_u.daddr = iph->saddr;
-+ fl.nl_u.ip4_u.saddr = iph->daddr;
-+ fl.nl_u.ip4_u.tos = RT_TOS(iph->tos);
-+ }
-+
-+ if (rt->u.dst.error) {
-+ dst_release(&rt->u.dst);
-+ return NULL;
-+ }
-+
-+ fl.proto = IPPROTO_TCP;
-+ fl.fl_ip_sport = tcph->dest;
-+ fl.fl_ip_dport = tcph->source;
-+
-+ xfrm_lookup((struct dst_entry **)&rt, &fl, NULL, 0);
-+
-+ return rt;
-+}
-+
-+static void send_reset(struct sk_buff *oldskb, int hook)
-+{
-+ struct sk_buff *nskb;
-+ struct iphdr *iph = ip_hdr(oldskb);
+ struct tcphdr _otcph, *oth, *tcph;
-+ __be16 tmp_port;
-+ __be32 tmp_addr;
-+ int needs_ack;
+ unsigned int addr_type;
++ struct sk_buff *nskb;
++ u_int16_t tmp_port;
++ u_int32_t tmp_addr;
++ struct iphdr *niph;
++ bool needs_ack;
+
+ /* IP header checks: fragment. */
-+ if (iph->frag_off & htons(IP_OFFSET))
++ if (ip_hdr(oldskb)->frag_off & htons(IP_OFFSET))
+ return;
+
+ oth = skb_header_pointer(oldskb, ip_hdrlen(oldskb),
@@ -518,78 +443,75 @@ Index: linux-2.6.23/net/netfilter/xt_DELUDE.c
+
+ /* This packet will not be the same as the other: clear nf fields */
+ nf_reset(nskb);
-+ nskb->nfmark = 0;
++ nskb->mark = 0;
+ skb_init_secmark(nskb);
+
+ skb_shinfo(nskb)->gso_size = 0;
+ skb_shinfo(nskb)->gso_segs = 0;
+ skb_shinfo(nskb)->gso_type = 0;
+
-+ tcph = tcp_hdr(nskb);
++ tcph = (struct tcphdr *)(skb_network_header(nskb) + ip_hdrlen(nskb));
+
+ /* Swap source and dest */
-+ tmp_addr = ip_hdr(nskb)->saddr;
-+ ip_hdr(nskb)->saddr = ip_hdr(nskb)->daddr;
-+ ip_hdr(nskb)->daddr = tmp_addr;
-+ tmp_port = tcph->source;
++ niph = ip_hdr(nskb);
++ tmp_addr = niph->saddr;
++ niph->saddr = niph->daddr;
++ niph->daddr = tmp_addr;
++ tmp_port = tcph->source;
+ tcph->source = tcph->dest;
-+ tcph->dest = tmp_port;
++ tcph->dest = tmp_port;
+
+ /* Truncate to length (no data) */
-+ tcph->doff = sizeof(struct tcphdr)/4;
++ tcph->doff = sizeof(struct tcphdr) / 4;
+ skb_trim(nskb, ip_hdrlen(nskb) + sizeof(struct tcphdr));
-+ ip_hdr(nskb)->tot_len = htons(nskb->len);
++ niph->tot_len = htons(nskb->len);
+
-+ if(oth->syn && !oth->ack && !oth->rst && !oth->fin) {
++ if (oth->syn && !oth->ack && !oth->rst && !oth->fin) {
+ /* DELUDE essential part */
+ tcph->ack_seq = htonl(ntohl(oth->seq) + oth->syn + oth->fin +
+ oldskb->len - ip_hdrlen(oldskb) -
+ (oth->doff << 2));
-+ tcph->seq = htonl(secure_tcp_sequence_number(
-+ ip_hdr(nskb)->saddr, ip_hdr(nskb)->daddr,
-+ tcph->source, tcph->dest));
-+ tcph->ack = 1;
++ tcph->seq = false;
++ tcph->ack = true;
+ } else {
-+ if(!tcph->ack) {
-+ needs_ack = 1;
-+ tcph->ack_seq = htonl(ntohl(oth->seq) + oth->syn + oth->fin
-+ + oldskb->len - ip_hdrlen(oldskb)
-+ - (oth->doff<<2));
-+ tcph->seq = 0;
++ if (!tcph->ack) {
++ needs_ack = true;
++ tcph->ack_seq = htonl(ntohl(oth->seq) + oth->syn +
++ oth->fin + oldskb->len -
++ ip_hdrlen(oldskb) - (oth->doff<<2));
++ tcph->seq = false;
+ } else {
-+ needs_ack = 0;
-+ tcph->seq = oth->ack_seq;
-+ tcph->ack_seq = 0;
++ needs_ack = false;
++ tcph->seq = oth->ack_seq;
++ tcph->ack_seq = false;
+ }
+
+ /* Reset flags */
+ ((u_int8_t *)tcph)[13] = 0;
-+ tcph->rst = 1;
++ tcph->rst = true;
+ tcph->ack = needs_ack;
+ }
+
-+
-+ tcph->window = 0;
++ tcph->window = 0;
+ tcph->urg_ptr = 0;
+
+ /* Adjust TCP checksum */
+ tcph->check = 0;
-+ tcph->check = tcp_v4_check(tcph, sizeof(struct tcphdr),
-+ ip_hdr(nskb)->saddr,
-+ ip_hdr(nskb)->daddr,
-+ csum_partial((char *)tcph,
-+ sizeof(struct tcphdr), 0));
++ tcph->check = tcp_v4_check(sizeof(struct tcphdr), niph->saddr,
++ niph->daddr, csum_partial((char *)tcph,
++ sizeof(struct tcphdr), 0));
+
+ /* Set DF, id = 0 */
-+ ip_hdr(nskb)->frag_off = htons(IP_DF);
-+ ip_hdr(nskb)->id = 0;
++ niph->frag_off = htons(IP_DF);
++ niph->id = 0;
+
+ addr_type = RTN_UNSPEC;
-+ if (hook != NF_IP_FORWARD
+#ifdef CONFIG_BRIDGE_NETFILTER
-+ || (nskb->nf_bridge && nskb->nf_bridge->mask & BRNF_BRIDGED)
++ if (hook != NF_IP_FORWARD || (nskb->nf_bridge != NULL &&
++ nskb->nf_bridge->mask & BRNF_BRIDGED))
++#else
++ if (hook != NF_IP_FORWARD)
+#endif
-+ )
+ addr_type = RTN_LOCAL;
+
+ if (ip_route_me_harder(&nskb, addr_type))
@@ -598,12 +520,11 @@ Index: linux-2.6.23/net/netfilter/xt_DELUDE.c
+ nskb->ip_summed = CHECKSUM_NONE;
+
+ /* Adjust IP TTL */
-+ ip_hdr(nskb)->ttl = dst_metric(nskb->dst, RTAX_HOPLIMIT);
++ niph->ttl = dst_metric(nskb->dst, RTAX_HOPLIMIT);
+
+ /* Adjust IP checksum */
-+ ip_hdr(nskb)->check = 0;
-+ ip_hdr(nskb)->check = ip_fast_csum((unsigned char *)ip_hdr(nskb),
-+ ip_hdr(nskb)->ihl);
++ niph->check = 0;
++ niph->check = ip_fast_csum(skb_network_header(nskb), niph->ihl);
+
+ /* "Never happens" */
+ if (nskb->len > dst_mtu(nskb->dst))
@@ -619,78 +540,57 @@ Index: linux-2.6.23/net/netfilter/xt_DELUDE.c
+ kfree_skb(nskb);
+}
+
-+static unsigned int xt_delude_target(struct sk_buff **pskb,
++static unsigned int delude_tg(struct sk_buff **pskb,
+ const struct net_device *in, const struct net_device *out,
-+ unsigned int hooknum, const struct xt_target *target, const void *targinfo
-+#ifdef HAVE_TARGUSERINFO
-+ ,
-+ void *userinfo
-+#endif
-+ )
++ unsigned int hooknum, const struct xt_target *target, const void *targinfo)
+{
+ /* WARNING: This code causes reentry within iptables.
+ This means that the iptables jump stack is now crap. We
+ must return an absolute verdict. --RR */
-+ send_reset(*pskb, hooknum);
++ delude_send_reset(*pskb, hooknum);
+ return NF_DROP;
+}
+
-+static bool xt_delude_check(const char *tablename, const void *e_void,
-+ const struct xt_target *target, void *targinfo,
-+#ifdef HAVE_TARGINFOSIZE
-+ unsigned int targinfosize,
-+#endif
-+ unsigned int hook_mask)
-+{
-+ if(hook_mask & ~((1 << NF_IP_LOCAL_IN) | (1 << NF_IP_FORWARD))) {
-+ printk(KERN_WARNING PFX "DELUDE may not be used in chains "
-+ "other than INPUT and FORWARD\n");
-+ return false;
-+ }
-+ return true;
-+}
-+
-+static struct xt_target xt_delude_info = {
++static struct xt_target delude_tg_reg = {
+ .name = "DELUDE",
-+ .target = xt_delude_target,
-+ .checkentry = xt_delude_check,
++ .family = AF_INET,
+ .table = "filter",
-+ .hooks = (1 << NF_IP_LOCAL_IN) | (1 << NF_IP_FORWARD) |
-+ (1 << NF_IP_LOCAL_OUT),
++ .hooks = (1 << NF_IP_LOCAL_IN) | (1 << NF_IP_FORWARD),
++ .target = delude_tg,
+ .proto = IPPROTO_TCP,
-+ .family = AF_INET,
+ .me = THIS_MODULE,
+};
+
-+static int __init xt_delude_init(void)
++static int __init delude_tg_init(void)
+{
-+ return xt_register_target(&xt_delude_info);
++ return xt_register_target(&delude_tg_reg);
+}
+
-+static void __exit xt_delude_exit(void)
++static void __exit delude_tg_exit(void)
+{
-+ xt_unregister_target(&xt_delude_info);
++ xt_unregister_target(&delude_tg_reg);
+}
+
-+module_init(xt_delude_init);
-+module_exit(xt_delude_exit);
-+MODULE_AUTHOR("Jan Engelhardt <jengelh@gmx.de>");
-+MODULE_DESCRIPTION("netfilter DELUDE target");
++module_init(delude_tg_init);
++module_exit(delude_tg_exit);
++MODULE_AUTHOR("Jan Engelhardt <jengelh@computergmbh.de>");
++MODULE_DESCRIPTION("netfilter \"DELUDE\" target");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("ipt_DELUDE");
-Index: linux-2.6.23/net/netfilter/xt_portscan.c
+Index: linux-2.6.23.16/net/netfilter/xt_portscan.c
===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ linux-2.6.23/net/netfilter/xt_portscan.c 2007-10-10 13:52:59.000000000 +0800
-@@ -0,0 +1,272 @@
+--- /dev/null
++++ linux-2.6.23.16/net/netfilter/xt_portscan.c
+@@ -0,0 +1,269 @@
+/*
-+ portscan match for netfilter
-+
-+ Written by Jan Engelhardt, 2006 - 2007
-+ This program is free software; you can redistribute it and/or modify
-+ it under the terms of the GNU General Public License version 2 as
-+ published by the Free Software Foundation.
-+*/
++ * portscan match for netfilter
++ * Copyright © CC Computer Consultants GmbH, 2006 - 2007
++ * Contact: Jan Engelhardt <jengelh@computergmbh.de>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License; either version
++ * 2 or 3 as published by the Free Software Foundation.
++ */
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/module.h>
@@ -702,9 +602,15 @@ Index: linux-2.6.23/net/netfilter/xt_portscan.c
+#include <linux/version.h>
+#include <linux/netfilter/x_tables.h>
+#include <linux/netfilter/xt_tcpudp.h>
-+#include <linux/netfilter/oot_conntrack.h>
-+#include <linux/netfilter/xt_portscan.h>
-+#include <linux/netfilter/oot_trans.h>
++#include <net/netfilter/nf_nat_rule.h>
++#if defined(_LOCAL)
++# include "xt_portscan.h"
++#elif defined(CONFIG_NETFILTER_XT_MATCH_PORTSCAN) || \
++ defined(CONFIG_NETFILTER_XT_MATCH_PORTSCAN_MODULE)
++# include <linux/netfilter/xt_portscan.h>
++#else
++# include "xt_portscan.h"
++#endif
+#define PFX KBUILD_MODNAME ": "
+
+enum {
@@ -751,55 +657,55 @@ Index: linux-2.6.23/net/netfilter/xt_portscan.c
+MODULE_PARM_DESC(mark_valid, "connmark value for Valid state");
+
+/* TCP flag functions */
-+static inline int tflg_ack4(const struct tcphdr *th)
++static inline bool tflg_ack4(const struct tcphdr *th)
+{
+ return (tcp_flag_word(th) & TCP_FLAGS_ALL4) == TCP_FLAG_ACK;
+}
+
-+static inline int tflg_ack6(const struct tcphdr *th)
++static inline bool tflg_ack6(const struct tcphdr *th)
+{
+ return (tcp_flag_word(th) & TCP_FLAGS_ALL6) == TCP_FLAG_ACK;
+}
+
-+static inline int tflg_fin(const struct tcphdr *th)
++static inline bool tflg_fin(const struct tcphdr *th)
+{
+ return (tcp_flag_word(th) & TCP_FLAGS_ALL3) == TCP_FLAG_FIN;
+}
+
-+static inline int tflg_rst(const struct tcphdr *th)
++static inline bool tflg_rst(const struct tcphdr *th)
+{
+ return (tcp_flag_word(th) & TCP_FLAGS_ALL3) == TCP_FLAG_RST;
+}
+
-+static inline int tflg_rstack(const struct tcphdr *th)
++static inline bool tflg_rstack(const struct tcphdr *th)
+{
+ return (tcp_flag_word(th) & TCP_FLAGS_ALL4) ==
+ (TCP_FLAG_ACK | TCP_FLAG_RST);
+}
+
-+static inline int tflg_syn(const struct tcphdr *th)
++static inline bool tflg_syn(const struct tcphdr *th)
+{
+ return (tcp_flag_word(th) & TCP_FLAGS_ALL4) == TCP_FLAG_SYN;
+}
+
-+static inline int tflg_synack(const struct tcphdr *th)
++static inline bool tflg_synack(const struct tcphdr *th)
+{
+ return (tcp_flag_word(th) & TCP_FLAGS_ALL4) ==
+ (TCP_FLAG_SYN | TCP_FLAG_ACK);
+}
+
+/* portscan functions */
-+static inline int xt_portscan_stealth(const struct tcphdr *th)
++static inline bool portscan_mt_stealth(const struct tcphdr *th)
+{
+ /*
+ * "Connection refused" replies to our own probes must not be matched.
+ */
-+ if(tflg_rstack(th))
-+ return 0;
++ if (tflg_rstack(th))
++ return false;
+
-+ if(tflg_rst(th) && printk_ratelimit()) {
++ if (tflg_rst(th) && printk_ratelimit()) {
+ printk(KERN_WARNING PFX "Warning: Pure RST received\n");
-+ return 0;
++ return false;
+ }
+
+ /*
@@ -811,42 +717,43 @@ Index: linux-2.6.23/net/netfilter/xt_portscan.c
+ return !tflg_syn(th);
+}
+
-+static inline int xt_portscan_full(int mark, enum ip_conntrack_info ctstate,
-+ int loopback, const struct tcphdr *tcph, int payload_len)
++static inline unsigned int portscan_mt_full(int mark,
++ enum ip_conntrack_info ctstate, bool loopback, const struct tcphdr *tcph,
++ unsigned int payload_len)
+{
-+ if(mark == mark_estab2) {
++ if (mark == mark_estab2) {
+ /*
+ * -m connmark --mark $ESTAB2
+ */
-+ if(tflg_ack4(tcph) && payload_len == 0)
++ if (tflg_ack4(tcph) && payload_len == 0)
+ return mark; /* keep mark */
-+ else if(tflg_rst(tcph) || tflg_fin(tcph))
++ else if (tflg_rst(tcph) || tflg_fin(tcph))
+ return mark_grscan;
+ else
+ return mark_valid;
-+ } else if(mark == mark_estab1) {
++ } else if (mark == mark_estab1) {
+ /*
+ * -m connmark --mark $ESTAB1
+ */
-+ if(tflg_rst(tcph) || tflg_fin(tcph))
++ if (tflg_rst(tcph) || tflg_fin(tcph))
+ return mark_cnscan;
-+ else if(!loopback && tflg_ack4(tcph) && payload_len == 0)
++ else if (!loopback && tflg_ack4(tcph) && payload_len == 0)
+ return mark_estab2;
+ else
+ return mark_valid;
-+ } else if(mark == mark_synrcv) {
++ } else if (mark == mark_synrcv) {
+ /*
+ * -m connmark --mark $SYN
+ */
-+ if(loopback && tflg_synack(tcph))
++ if (loopback && tflg_synack(tcph))
+ return mark; /* keep mark */
-+ else if(loopback && tflg_rstack(tcph))
++ else if (loopback && tflg_rstack(tcph))
+ return mark_closed;
-+ else if(tflg_ack6(tcph))
++ else if (tflg_ack6(tcph))
+ return mark_estab1;
+ else
+ return mark_synscan;
-+ } else if(ctstate == IP_CT_NEW && tflg_syn(tcph)) {
++ } else if (ctstate == IP_CT_NEW && tflg_syn(tcph)) {
+ /*
+ * -p tcp --syn --ctstate NEW
+ */
@@ -855,25 +762,25 @@ Index: linux-2.6.23/net/netfilter/xt_portscan.c
+ return mark;
+}
+
-+static bool xt_portscan_match(const struct sk_buff *skb,
++static bool portscan_mt(const struct sk_buff *skb,
+ const struct net_device *in, const struct net_device *out,
+ const struct xt_match *match, const void *matchinfo, int offset,
+ unsigned int protoff, bool *hotdrop)
+{
-+ const struct xt_portscan_info *info = matchinfo;
++ const struct xt_portscan_match_info *info = matchinfo;
+ enum ip_conntrack_info ctstate;
-+ struct nf_conn *ctdata;
+ const struct tcphdr *tcph;
++ struct nf_conn *ctdata;
+ struct tcphdr tcph_buf;
+
+ tcph = skb_header_pointer(skb, protoff, sizeof(tcph_buf), &tcph_buf);
-+ if(tcph == NULL)
++ if (tcph == NULL)
+ return false;
+
+ /* Check for invalid packets: -m conntrack --ctstate INVALID */
-+ if((ctdata = nf_ct_get(skb, &ctstate)) == NULL) {
-+ if(info->match_stealth)
-+ return xt_portscan_stealth(tcph);
++ if ((ctdata = nf_ct_get(skb, &ctstate)) == NULL) {
++ if (info->match_stealth)
++ return portscan_mt_stealth(tcph);
+ /*
+ * If @ctdata is NULL, we cannot match the other scan
+ * types, return.
@@ -886,17 +793,17 @@ Index: linux-2.6.23/net/netfilter/xt_portscan.c
+ * simulate must not be run through again. And for speedup, do not call
+ * it either when the connection is already VALID.
+ */
-+ if((ctdata->mark & connmark_mask) == mark_valid ||
-+ (skb->nfmark & packet_mask) != mark_seen)
-+ {
++ if ((ctdata->mark & connmark_mask) == mark_valid ||
++ (skb->mark & packet_mask) != mark_seen) {
+ unsigned int n;
-+ n = xt_portscan_full(ctdata->mark & connmark_mask, ctstate,
++
++ n = portscan_mt_full(ctdata->mark & connmark_mask, ctstate,
+ in == &loopback_dev, tcph,
+ skb->len - protoff - 4 * tcph->doff);
+
+ ctdata->mark = (ctdata->mark & ~connmark_mask) | n;
-+ ((struct sk_buff *)skb)->nfmark =
-+ (skb->nfmark & ~packet_mask) | mark_seen;
++ ((struct sk_buff *)skb)->mark =
++ (skb->mark & ~packet_mask) ^ mark_seen;
+ }
+
+ return (info->match_syn && ctdata->mark == mark_synscan) ||
@@ -904,62 +811,51 @@ Index: linux-2.6.23/net/netfilter/xt_portscan.c
+ (info->match_gr && ctdata->mark == mark_grscan);
+}
+
-+static bool xt_portscan_checkentry(const char *tablename, const void *entry,
-+ const struct xt_match *match, void *matchinfo,
-+#ifdef HAVE_MATCHINFOSIZE
-+ unsigned int matchinfosize,
-+#endif
-+ unsigned int hook_mask)
++static bool portscan_mt_check(const char *tablename, const void *entry,
++ const struct xt_match *match, void *matchinfo, unsigned int hook_mask)
+{
-+ const struct xt_portscan_info *info = matchinfo;
-+#ifdef HAVE_MATCHINFOSIZE
-+ if(matchinfosize != XT_ALIGN(sizeof(struct xt_portscan_info))) {
-+ printk(KERN_WARNING PFX "matchinfosize %u != %Zu\n",
-+ matchinfosize,
-+ XT_ALIGN(sizeof(struct xt_portscan_info)));
-+ return false;
-+ }
-+#endif
-+ if((info->match_stealth & ~1) || (info->match_syn & ~1) ||
-+ (info->match_cn & ~1) || (info->match_gr & ~1)) {
++ const struct xt_portscan_match_info *info = matchinfo;
++
++ if ((info->match_stealth & ~1) || (info->match_syn & ~1) ||
++ (info->match_cn & ~1) || (info->match_gr & ~1)) {
+ printk(KERN_WARNING PFX "Invalid flags\n");
+ return false;
+ }
+ return true;
+}
+
-+static struct xt_match xt_portscan = {
++static struct xt_match portscan_mt_reg __read_mostly = {
+ .name = "portscan",
-+ .match = xt_portscan_match,
-+ .checkentry = xt_portscan_checkentry,
-+ .matchsize = sizeof(struct xt_portscan_info),
-+ .proto = IPPROTO_TCP,
+ .family = AF_INET,
++ .match = portscan_mt,
++ .checkentry = portscan_mt_check,
++ .matchsize = sizeof(struct xt_portscan_match_info),
++ .proto = IPPROTO_TCP,
+ .me = THIS_MODULE,
+};
+
-+static int __init xt_portscan_init(void)
++static int __init portscan_mt_init(void)
+{
-+ return xt_register_match(&xt_portscan);
++ return xt_register_match(&portscan_mt_reg);
+}
+
-+static void __exit xt_portscan_exit(void)
++static void __exit portscan_mt_exit(void)
+{
-+ xt_unregister_match(&xt_portscan);
++ xt_unregister_match(&portscan_mt_reg);
+ return;
+}
+
-+module_init(xt_portscan_init);
-+module_exit(xt_portscan_exit);
-+MODULE_AUTHOR("Jan Engelhardt <jengelh@gmx.de>");
-+MODULE_DESCRIPTION("netfilter portscan match module");
++module_init(portscan_mt_init);
++module_exit(portscan_mt_exit);
++MODULE_AUTHOR("Jan Engelhardt <jengelh@computergmbh.de>");
++MODULE_DESCRIPTION("netfilter \"portscan\" match");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("ipt_portscan");
-Index: linux-2.6.23/drivers/char/random.c
+Index: linux-2.6.23.16/drivers/char/random.c
===================================================================
---- linux-2.6.23.orig/drivers/char/random.c 2007-10-10 04:31:38.000000000 +0800
-+++ linux-2.6.23/drivers/char/random.c 2007-10-10 13:52:59.000000000 +0800
-@@ -1564,6 +1564,8 @@
+--- linux-2.6.23.16.orig/drivers/char/random.c
++++ linux-2.6.23.16/drivers/char/random.c
+@@ -1564,6 +1564,8 @@ __u32 secure_tcp_sequence_number(__be32
return seq;
}
diff --git a/target/linux/generic-2.6/patches-2.6.23/171-netfilter_tarpit.patch b/target/linux/generic-2.6/patches-2.6.23/171-netfilter_tarpit.patch
index 058dda5..073951a 100644
--- a/target/linux/generic-2.6/patches-2.6.23/171-netfilter_tarpit.patch
+++ b/target/linux/generic-2.6/patches-2.6.23/171-netfilter_tarpit.patch
@@ -1,7 +1,7 @@
-Index: linux-2.6.23/net/netfilter/Kconfig
+Index: linux-2.6.23.16/net/netfilter/Kconfig
===================================================================
---- linux-2.6.23.orig/net/netfilter/Kconfig
-+++ linux-2.6.23/net/netfilter/Kconfig
+--- linux-2.6.23.16.orig/net/netfilter/Kconfig
++++ linux-2.6.23.16/net/netfilter/Kconfig
@@ -401,6 +401,23 @@ config NETFILTER_XT_TARGET_CONNSECMARK
To compile it as a module, choose M here. If unsure, say N.
@@ -26,22 +26,22 @@ Index: linux-2.6.23/net/netfilter/Kconfig
config NETFILTER_XT_TARGET_TCPMSS
tristate '"TCPMSS" target support'
depends on NETFILTER_XTABLES && (IPV6 || IPV6=n)
-Index: linux-2.6.23/net/netfilter/Makefile
+Index: linux-2.6.23.16/net/netfilter/Makefile
===================================================================
---- linux-2.6.23.orig/net/netfilter/Makefile
-+++ linux-2.6.23/net/netfilter/Makefile
-@@ -49,6 +49,7 @@ obj-$(CONFIG_NETFILTER_XT_TARGET_NFLOG)
+--- linux-2.6.23.16.orig/net/netfilter/Makefile
++++ linux-2.6.23.16/net/netfilter/Makefile
+@@ -47,6 +47,7 @@ obj-$(CONFIG_NETFILTER_XT_TARGET_NFLOG)
obj-$(CONFIG_NETFILTER_XT_TARGET_NOTRACK) += xt_NOTRACK.o
obj-$(CONFIG_NETFILTER_XT_TARGET_TRACE) += xt_TRACE.o
obj-$(CONFIG_NETFILTER_XT_TARGET_SECMARK) += xt_SECMARK.o
+obj-$(CONFIG_NETFILTER_XT_TARGET_TARPIT) += xt_TARPIT.o
obj-$(CONFIG_NETFILTER_XT_TARGET_TCPMSS) += xt_TCPMSS.o
obj-$(CONFIG_NETFILTER_XT_TARGET_CONNSECMARK) += xt_CONNSECMARK.o
-
-Index: linux-2.6.23/net/netfilter/xt_TARPIT.c
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CHAOS) += xt_CHAOS.o
+Index: linux-2.6.23.16/net/netfilter/xt_TARPIT.c
===================================================================
--- /dev/null
-+++ linux-2.6.23/net/netfilter/xt_TARPIT.c
++++ linux-2.6.23.16/net/netfilter/xt_TARPIT.c
@@ -0,0 +1,280 @@
+/*
+ * Kernel module to capture and hold incoming TCP connections using
generated by cgit v1.1 at 2024-10-30 15:24:03 +0000