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+diff -ruaN linux-2.4.34.orig/Documentation/Configure.help linux-2.4.34/Documentation/Configure.help
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+--- linux-2.4.34.orig/Documentation/Configure.help 2007-06-01 12:17:16.000000000 +0100
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++++ linux-2.4.34/Documentation/Configure.help 2007-06-01 12:20:20.000000000 +0100
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+@@ -2986,6 +2986,14 @@
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+ If you want to compile it as a module, say M here and read
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+ <file:Documentation/modules.txt>. If unsure, say `N'.
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+
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++iprange match support
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++CONFIG_IP_NF_MATCH_IPRANGE
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++ This option makes possible to match IP addresses against
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++ IP address ranges.
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++
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++ If you want to compile it as a module, say M here and read
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++ <file:Documentation/modules.txt>. If unsure, say `N'.
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++
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+ Condition variable match support
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+ CONFIG_IP_NF_MATCH_CONDITION
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+ This option allows you to match firewall rules against condition
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+diff -ruaN linux-2.4.34.orig/include/linux/netfilter_ipv4/ipt_iprange.h linux-2.4.34/include/linux/netfilter_ipv4/ipt_iprange.h
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+--- linux-2.4.34.orig/include/linux/netfilter_ipv4/ipt_iprange.h 1970-01-01 01:00:00.000000000 +0100
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++++ linux-2.4.34/include/linux/netfilter_ipv4/ipt_iprange.h 2007-06-01 12:20:20.000000000 +0100
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+@@ -0,0 +1,23 @@
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++#ifndef _IPT_IPRANGE_H
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++#define _IPT_IPRANGE_H
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++
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++#define IPRANGE_SRC 0x01 /* Match source IP address */
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++#define IPRANGE_DST 0x02 /* Match destination IP address */
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++#define IPRANGE_SRC_INV 0x10 /* Negate the condition */
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++#define IPRANGE_DST_INV 0x20 /* Negate the condition */
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++
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++struct ipt_iprange {
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++ /* Inclusive: network order. */
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++ u_int32_t min_ip, max_ip;
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++};
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++
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++struct ipt_iprange_info
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++{
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++ struct ipt_iprange src;
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++ struct ipt_iprange dst;
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++
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++ /* Flags from above */
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++ u_int8_t flags;
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++};
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++
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++#endif /* _IPT_IPRANGE_H */
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+diff -ruaN linux-2.4.34.orig/net/ipv4/netfilter/Config.in linux-2.4.34/net/ipv4/netfilter/Config.in
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+--- linux-2.4.34.orig/net/ipv4/netfilter/Config.in 2007-06-01 12:17:17.000000000 +0100
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++++ linux-2.4.34/net/ipv4/netfilter/Config.in 2007-06-01 12:20:20.000000000 +0100
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+@@ -27,6 +27,7 @@
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+ if [ "$CONFIG_IP_NF_IPTABLES" != "n" ]; then
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+ # The simple matches.
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+ dep_tristate ' limit match support' CONFIG_IP_NF_MATCH_LIMIT $CONFIG_IP_NF_IPTABLES
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++ dep_tristate ' IP range match support' CONFIG_IP_NF_MATCH_IPRANGE $CONFIG_IP_NF_IPTABLES
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+ dep_tristate ' quota match support' CONFIG_IP_NF_MATCH_QUOTA $CONFIG_IP_NF_IPTABLES
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+
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+ dep_tristate ' IP set support' CONFIG_IP_NF_SET $CONFIG_IP_NF_IPTABLES
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+diff -ruaN linux-2.4.34.orig/net/ipv4/netfilter/ipt_iprange.c linux-2.4.34/net/ipv4/netfilter/ipt_iprange.c
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+--- linux-2.4.34.orig/net/ipv4/netfilter/ipt_iprange.c 1970-01-01 01:00:00.000000000 +0100
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++++ linux-2.4.34/net/ipv4/netfilter/ipt_iprange.c 2007-06-01 12:20:20.000000000 +0100
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+@@ -0,0 +1,101 @@
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++/*
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++ * iptables module to match IP address ranges
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++ * (c) 2003 Jozsef Kadlecsik <[email protected]>
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++ *
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++ * Released under the terms of GNU GPLv2.
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++ *
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++ */
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++#include <linux/module.h>
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++#include <linux/skbuff.h>
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++#include <linux/ip.h>
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++#include <linux/netfilter_ipv4/ip_tables.h>
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++#include <linux/netfilter_ipv4/ipt_iprange.h>
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++
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++MODULE_LICENSE("GPL");
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++MODULE_AUTHOR("Jozsef Kadlecsik <[email protected]>");
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++MODULE_DESCRIPTION("iptables arbitrary IP range match module");
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++
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++#if 0
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++#define DEBUGP printk
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++#else
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++#define DEBUGP(format, args...)
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++#endif
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++
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++static int
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++match(const struct sk_buff *skb,
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++ const struct net_device *in,
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++ const struct net_device *out,
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++ const void *matchinfo,
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++ int offset,
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++ const void *hdr,
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++ u_int16_t datalen,
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++ int *hotdrop)
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++{
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++ const struct ipt_iprange_info *info = matchinfo;
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++ const struct iphdr *iph = skb->nh.iph;
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++
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++
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++ if (info->flags & IPRANGE_SRC) {
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++ if (((ntohl(iph->saddr) < ntohl(info->src.min_ip))
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++ || (ntohl(iph->saddr) > ntohl(info->src.max_ip)))
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++ ^ !!(info->flags & IPRANGE_SRC_INV)) {
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++ DEBUGP("src IP %u.%u.%u.%u NOT in range %s"
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++ "%u.%u.%u.%u-%u.%u.%u.%u\n",
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++ NIPQUAD(iph->saddr),
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++ info->flags & IPRANGE_SRC_INV ? "(INV) " : "",
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++ NIPQUAD(info->src.min_ip),
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++ NIPQUAD(info->src.max_ip));
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++ return 0;
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++ }
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++ }
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++ if (info->flags & IPRANGE_DST) {
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++ if (((ntohl(iph->daddr) < ntohl(info->dst.min_ip))
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++ || (ntohl(iph->daddr) > ntohl(info->dst.max_ip)))
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++ ^ !!(info->flags & IPRANGE_DST_INV)) {
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++ DEBUGP("dst IP %u.%u.%u.%u NOT in range %s"
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++ "%u.%u.%u.%u-%u.%u.%u.%u\n",
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++ NIPQUAD(iph->daddr),
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++ info->flags & IPRANGE_DST_INV ? "(INV) " : "",
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++ NIPQUAD(info->dst.min_ip),
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++ NIPQUAD(info->dst.max_ip));
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++ return 0;
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++ }
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++ }
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++ return 1;
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++}
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++
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++static int check(const char *tablename,
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++ const struct ipt_ip *ip,
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++ void *matchinfo,
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++ unsigned int matchsize,
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++ unsigned int hook_mask)
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++{
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++ /* verify size */
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++ if (matchsize != IPT_ALIGN(sizeof(struct ipt_iprange_info)))
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++ return 0;
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++
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++ return 1;
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++}
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++
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++static struct ipt_match iprange_match =
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++{
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++ .list = { NULL, NULL },
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++ .name = "iprange",
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++ .match = &match,
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++ .checkentry = &check,
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++ .destroy = NULL,
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++ .me = THIS_MODULE
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++};
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++
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++static int __init init(void)
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++{
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++ return ipt_register_match(&iprange_match);
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++}
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++
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++static void __exit fini(void)
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++{
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++ ipt_unregister_match(&iprange_match);
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++}
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++
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++module_init(init);
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++module_exit(fini);
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+diff -ruaN linux-2.4.34.orig/net/ipv4/netfilter/Makefile linux-2.4.34/net/ipv4/netfilter/Makefile
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+--- linux-2.4.34.orig/net/ipv4/netfilter/Makefile 2007-06-01 12:17:17.000000000 +0100
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++++ linux-2.4.34/net/ipv4/netfilter/Makefile 2007-06-01 12:20:20.000000000 +0100
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+@@ -90,6 +90,7 @@
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+ # matches
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+ obj-$(CONFIG_IP_NF_MATCH_HELPER) += ipt_helper.o
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+ obj-$(CONFIG_IP_NF_MATCH_LIMIT) += ipt_limit.o
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++obj-$(CONFIG_IP_NF_MATCH_IPRANGE) += ipt_iprange.o
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+ obj-$(CONFIG_IP_NF_MATCH_QUOTA) += ipt_quota.o
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+ obj-$(CONFIG_IP_NF_MATCH_MARK) += ipt_mark.o
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+ obj-$(CONFIG_IP_NF_MATCH_SET) += ipt_set.o
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Florian Fainelli