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authorJo-Philipp Wich <jow@openwrt.org>2009-12-01 22:31:10 +0000
committerJo-Philipp Wich <jow@openwrt.org>2009-12-01 22:31:10 +0000
commit6cb040903b02a328661f219890c31a377c0c6b8c (patch)
treebbc36ce04044ae73ea4780db5fa2acc88b21c20b /package/firewall/files
parenta2637149367188defffb5bcf69e3437f90912798 (diff)
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firewall: initialize dest_port with src_dport if omitted in redirect sections to narrow down corresponding forward rules to the actual target ports - thanks Niels Boehm! (#6249)
SVN-Revision: 18617
Diffstat (limited to 'package/firewall/files')
-rwxr-xr-xpackage/firewall/files/uci_firewall.sh42
1 files changed, 21 insertions, 21 deletions
diff --git a/package/firewall/files/uci_firewall.sh b/package/firewall/files/uci_firewall.sh
index 67662c1..478b95c 100755
--- a/package/firewall/files/uci_firewall.sh
+++ b/package/firewall/files/uci_firewall.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/sh
# Copyright (C) 2008 John Crispin <blogic@openwrt.org>
. /etc/functions.sh
@@ -43,12 +43,12 @@ load_policy() {
create_zone() {
local exists
-
+
[ "$1" == "loopback" ] && return
config_get exists $ZONE_LIST $1
[ -n "$exists" ] && return
- config_set $ZONE_LIST $1 1
+ config_set $ZONE_LIST $1 1
$IPTABLES -N zone_$1
$IPTABLES -N zone_$1_MSSFIX
@@ -90,8 +90,8 @@ addif() {
$IPTABLES -I zone_${zone}_ACCEPT 1 -i "$ifname" -j ACCEPT
$IPTABLES -I zone_${zone}_DROP 1 -i "$ifname" -j DROP
$IPTABLES -I zone_${zone}_REJECT 1 -i "$ifname" -j reject
- $IPTABLES -I zone_${zone}_nat 1 -t nat -o "$ifname" -j MASQUERADE
- $IPTABLES -I PREROUTING 1 -t nat -i "$ifname" -j zone_${zone}_prerouting
+ $IPTABLES -I zone_${zone}_nat 1 -t nat -o "$ifname" -j MASQUERADE
+ $IPTABLES -I PREROUTING 1 -t nat -i "$ifname" -j zone_${zone}_prerouting
$IPTABLES -A forward -i "$ifname" -j zone_${zone}_forward
$IPTABLES -t raw -I PREROUTING 1 -i "$ifname" -j zone_${zone}_notrack
uci_set_state firewall core "${network}_ifname" "$ifname"
@@ -113,8 +113,8 @@ delif() {
$IPTABLES -D zone_${zone}_ACCEPT -i "$ifname" -j ACCEPT
$IPTABLES -D zone_${zone}_DROP -i "$ifname" -j DROP
$IPTABLES -D zone_${zone}_REJECT -i "$ifname" -j reject
- $IPTABLES -D zone_${zone}_nat -t nat -o "$ifname" -j MASQUERADE
- $IPTABLES -D PREROUTING -t nat -i "$ifname" -j zone_${zone}_prerouting
+ $IPTABLES -D zone_${zone}_nat -t nat -o "$ifname" -j MASQUERADE
+ $IPTABLES -D PREROUTING -t nat -i "$ifname" -j zone_${zone}_prerouting
$IPTABLES -D forward -i "$ifname" -j zone_${zone}_forward
uci_revert_state firewall core "${network}_ifname"
uci_revert_state firewall core "${network}_zone"
@@ -160,17 +160,17 @@ fw_defaults() {
load_policy "$1"
echo 1 > /proc/sys/net/ipv4/tcp_syncookies
- for f in /proc/sys/net/ipv4/conf/*/accept_redirects
+ for f in /proc/sys/net/ipv4/conf/*/accept_redirects
do
echo 0 > $f
done
- for f in /proc/sys/net/ipv4/conf/*/accept_source_route
+ for f in /proc/sys/net/ipv4/conf/*/accept_source_route
do
echo 0 > $f
- done
-
+ done
+
uci_revert_state firewall core
- uci_set_state firewall core "" firewall_state
+ uci_set_state firewall core "" firewall_state
$IPTABLES -P INPUT DROP
$IPTABLES -P OUTPUT DROP
@@ -197,7 +197,7 @@ fw_defaults() {
config_get syn_rate $1 syn_rate
config_get syn_burst $1 syn_burst
[ "$syn_flood" == "1" ] && load_synflood $syn_rate $syn_burst
-
+
echo "Adding custom chains"
fw_custom_chains
@@ -253,7 +253,7 @@ fw_zone() {
}
fw_rule() {
- local src
+ local src
local src_ip
local src_mac
local src_port
@@ -287,7 +287,7 @@ fw_rule() {
dest_port_last=${dest_port#*-}
[ "$dest_port_first" -ne "$dest_port_last" ] && { \
dest_port="$dest_port_first:$dest_port_last"; }
-
+
ZONE=input
TARGET=$target
[ -z "$target" ] && target=DROP
@@ -303,7 +303,7 @@ fw_rule() {
${src_mac:+-m mac --mac-source $src_mac} \
${dest_ip:+-d $dest_ip} \
${dest_port:+--dport $dest_port} \
- -j $TARGET
+ -j $TARGET
}
[ "$proto" == "tcpudp" -o -z "$proto" ] && {
proto=tcp
@@ -340,7 +340,7 @@ fw_redirect() {
local dest_ip
local dest_port dest_port2
local proto
-
+
config_get src $1 src
config_get src_ip $1 src_ip
config_get src_port $1 src_port
@@ -351,7 +351,7 @@ fw_redirect() {
config_get proto $1 proto
[ -z "$src" -o -z "$dest_ip" ] && { \
echo "redirect needs src and dest_ip"; return ; }
-
+
src_port_first=${src_port%-*}
src_port_last=${src_port#*-}
[ "$src_port_first" -ne "$src_port_last" ] && { \
@@ -362,7 +362,7 @@ fw_redirect() {
[ "$src_dport_first" -ne "$src_dport_last" ] && { \
src_dport="$src_dport_first:$src_dport_last"; }
- dest_port2=$dest_port
+ dest_port2=${dest_port:-$src_dport}
dest_port_first=${dest_port2%-*}
dest_port_last=${dest_port2#*-}
[ "$dest_port_first" -ne "$dest_port_last" ] && { \
@@ -384,7 +384,7 @@ fw_redirect() {
${src_port:+--sport $src_port} \
${dest_port2:+--dport $dest_port2} \
${src_mac:+-m mac --mac-source $src_mac} \
- -j ACCEPT
+ -j ACCEPT
}
[ "$proto" == "tcpudp" -o -z "$proto" ] && {
proto=tcp
@@ -418,7 +418,7 @@ fw_custom_chains() {
$IPTABLES -N forwarding_rule
$IPTABLES -N prerouting_rule -t nat
$IPTABLES -N postrouting_rule -t nat
-
+
$IPTABLES -A INPUT -j input_rule
$IPTABLES -A OUTPUT -j output_rule
$IPTABLES -A FORWARD -j forwarding_rule