mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-09-30 02:16:21 +03:00
firewall: extend nat reflection support
- use comment match to keep track of per-network rules - setup reflection for any interface which is part of a masqueraded zone, not just "wan" - delete per-network reflection rules if network is brought down git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34472 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
jow
parent
c4a99b6ef6
commit
8e0547608f
@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
|
|||||||
PKG_NAME:=firewall
|
PKG_NAME:=firewall
|
||||||
|
|
||||||
PKG_VERSION:=2
|
PKG_VERSION:=2
|
||||||
PKG_RELEASE:=53
|
PKG_RELEASE:=54
|
||||||
|
|
||||||
include $(INCLUDE_DIR)/package.mk
|
include $(INCLUDE_DIR)/package.mk
|
||||||
|
|
||||||
|
|||||||
@ -3,34 +3,59 @@
|
|||||||
. /lib/functions.sh
|
. /lib/functions.sh
|
||||||
. /lib/functions/network.sh
|
. /lib/functions/network.sh
|
||||||
|
|
||||||
if [ "$ACTION" = "add" ] && [ "$INTERFACE" = "wan" ]; then
|
if [ "$ACTION" = "remove" ]; then
|
||||||
local wanip
|
|
||||||
network_get_ipaddr wanip wan || return
|
|
||||||
|
|
||||||
iptables -t nat -F nat_reflection_in 2>/dev/null || {
|
delete_rules_by_comment() {
|
||||||
iptables -t nat -N nat_reflection_in
|
local table="$1"
|
||||||
iptables -t nat -A prerouting_rule -j nat_reflection_in
|
local chain="$2"
|
||||||
|
local comment="$3"
|
||||||
|
|
||||||
|
iptables -t "$table" --line-numbers -nL "$chain" 2>/dev/null | \
|
||||||
|
sed -e '
|
||||||
|
1d;
|
||||||
|
1! {
|
||||||
|
\#^[0-9]\+ .* /\* '"$comment"' \*/.*$# {
|
||||||
|
s/ .*$//;
|
||||||
|
G; h;
|
||||||
|
}
|
||||||
|
};
|
||||||
|
$!d;
|
||||||
|
' | xargs -n1 iptables -t "$table" -D "$chain" 2>/dev/null
|
||||||
}
|
}
|
||||||
|
|
||||||
iptables -t nat -F nat_reflection_out 2>/dev/null || {
|
delete_rules_by_comment nat nat_reflection_in "$INTERFACE"
|
||||||
iptables -t nat -N nat_reflection_out
|
delete_rules_by_comment nat nat_reflection_out "$INTERFACE"
|
||||||
iptables -t nat -A postrouting_rule -j nat_reflection_out
|
delete_rules_by_comment filter nat_reflection_fwd "$INTERFACE"
|
||||||
}
|
|
||||||
|
|
||||||
iptables -t filter -F nat_reflection_fwd 2>/dev/null || {
|
elif [ "$ACTION" = "add" ]; then
|
||||||
iptables -t filter -N nat_reflection_fwd
|
|
||||||
iptables -t filter -A forwarding_rule -j nat_reflection_fwd
|
prepare_chains() {
|
||||||
|
iptables -t nat -N nat_reflection_in 2>/dev/null && {
|
||||||
|
iptables -t nat -A prerouting_rule -j nat_reflection_in
|
||||||
|
}
|
||||||
|
|
||||||
|
iptables -t nat -N nat_reflection_out 2>/dev/null && {
|
||||||
|
iptables -t nat -A postrouting_rule -j nat_reflection_out
|
||||||
|
}
|
||||||
|
|
||||||
|
iptables -t filter -N nat_reflection_fwd 2>/dev/null && {
|
||||||
|
iptables -t filter -A forwarding_rule -j nat_reflection_fwd
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
find_networks() {
|
find_networks() {
|
||||||
find_networks_cb() {
|
find_networks_cb() {
|
||||||
local cfg="$1"
|
local cfg="$1"
|
||||||
local zone="$2"
|
local zone="$2"
|
||||||
|
local need_masq="${3:-0}"
|
||||||
|
|
||||||
local name
|
local name
|
||||||
config_get name "$cfg" name
|
config_get name "$cfg" name
|
||||||
|
|
||||||
[ "$name" = "$zone" ] && {
|
local masq
|
||||||
|
config_get_bool masq "$cfg" masq 0
|
||||||
|
|
||||||
|
[ "$name" = "$zone" ] && [ "$masq" -ge "$need_masq" ] && {
|
||||||
local network
|
local network
|
||||||
config_get network "$cfg" network
|
config_get network "$cfg" network
|
||||||
|
|
||||||
@ -51,82 +76,94 @@ if [ "$ACTION" = "add" ] && [ "$INTERFACE" = "wan" ]; then
|
|||||||
|
|
||||||
local src
|
local src
|
||||||
config_get src "$cfg" src
|
config_get src "$cfg" src
|
||||||
|
[ "$src" == "$ZONE" ] || return
|
||||||
|
|
||||||
|
local dest
|
||||||
|
config_get dest "$cfg" dest
|
||||||
|
[ "$dest" != "*" ] || return
|
||||||
|
|
||||||
local target
|
local target
|
||||||
config_get target "$cfg" target DNAT
|
config_get target "$cfg" target DNAT
|
||||||
|
[ "$target" = DNAT ] || return
|
||||||
|
|
||||||
[ "$src" = wan ] && [ "$target" = DNAT ] && {
|
prepare_chains
|
||||||
local dest
|
|
||||||
config_get dest "$cfg" dest "lan"
|
|
||||||
[ "$dest" != "*" ] || return
|
|
||||||
|
|
||||||
local net
|
local net
|
||||||
for net in $(find_networks "$dest"); do
|
for net in $(find_networks "$dest" 0); do
|
||||||
local lannet
|
local intnet
|
||||||
network_get_subnet lannet "$net" || return
|
network_get_subnet intnet "$net" || continue
|
||||||
|
|
||||||
local proto
|
local proto
|
||||||
config_get proto "$cfg" proto
|
config_get proto "$cfg" proto
|
||||||
|
|
||||||
local epmin epmax extport
|
local epmin epmax extport
|
||||||
config_get extport "$cfg" src_dport "1-65535"
|
config_get extport "$cfg" src_dport "1-65535"
|
||||||
[ -n "$extport" ] || return
|
[ -n "$extport" ] || return
|
||||||
|
|
||||||
epmin="${extport%[-:]*}"; epmax="${extport#*[-:]}"
|
epmin="${extport%[-:]*}"; epmax="${extport#*[-:]}"
|
||||||
[ "${epmin#!}" != "$epmax" ] || epmax=""
|
[ "${epmin#!}" != "$epmax" ] || epmax=""
|
||||||
|
|
||||||
local ipmin ipmax intport
|
local ipmin ipmax intport
|
||||||
config_get intport "$cfg" dest_port "$extport"
|
config_get intport "$cfg" dest_port "$extport"
|
||||||
|
|
||||||
ipmin="${intport%[-:]*}"; ipmax="${intport#*[-:]}"
|
ipmin="${intport%[-:]*}"; ipmax="${intport#*[-:]}"
|
||||||
[ "${ipmin#!}" != "$ipmax" ] || ipmax=""
|
[ "${ipmin#!}" != "$ipmax" ] || ipmax=""
|
||||||
|
|
||||||
local exthost
|
local exthost
|
||||||
config_get exthost "$cfg" src_dip "$wanip"
|
config_get exthost "$cfg" src_dip "$extip"
|
||||||
|
|
||||||
local inthost
|
local inthost
|
||||||
config_get inthost "$cfg" dest_ip
|
config_get inthost "$cfg" dest_ip
|
||||||
[ -n "$inthost" ] || return
|
[ -n "$inthost" ] || return
|
||||||
|
|
||||||
[ "$proto" = all ] && proto="tcp udp"
|
[ "$proto" = all ] && proto="tcp udp"
|
||||||
[ "$proto" = tcpudp ] && proto="tcp udp"
|
[ "$proto" = tcpudp ] && proto="tcp udp"
|
||||||
|
|
||||||
[ "${inthost#!}" = "$inthost" ] || return 0
|
[ "${inthost#!}" = "$inthost" ] || return 0
|
||||||
[ "${exthost#!}" = "$exthost" ] || return 0
|
[ "${exthost#!}" = "$exthost" ] || return 0
|
||||||
|
|
||||||
[ "${epmin#!}" != "$epmin" ] && \
|
[ "${epmin#!}" != "$epmin" ] && \
|
||||||
extport="! --dport ${epmin#!}${epmax:+:$epmax}" || \
|
extport="! --dport ${epmin#!}${epmax:+:$epmax}" || \
|
||||||
extport="--dport $epmin${epmax:+:$epmax}"
|
extport="--dport $epmin${epmax:+:$epmax}"
|
||||||
|
|
||||||
[ "${ipmin#!}" != "$ipmin" ] && \
|
[ "${ipmin#!}" != "$ipmin" ] && \
|
||||||
intport="! --dport ${ipmin#!}${ipmax:+:$ipmax}" || \
|
intport="! --dport ${ipmin#!}${ipmax:+:$ipmax}" || \
|
||||||
intport="--dport $ipmin${ipmax:+:$ipmax}"
|
intport="--dport $ipmin${ipmax:+:$ipmax}"
|
||||||
|
|
||||||
local p
|
local p
|
||||||
for p in ${proto:-tcp udp}; do
|
for p in ${proto:-tcp udp}; do
|
||||||
case "$p" in
|
case "$p" in
|
||||||
tcp|udp|6|17)
|
tcp|udp|6|17)
|
||||||
iptables -t nat -A nat_reflection_in \
|
iptables -t nat -A nat_reflection_in \
|
||||||
-s $lannet -d $exthost \
|
-s $intnet -d $exthost \
|
||||||
-p $p $extport \
|
-p $p $extport \
|
||||||
-j DNAT --to $inthost:${ipmin#!}${ipmax:+-$ipmax}
|
-m comment --comment "$INTERFACE" \
|
||||||
|
-j DNAT --to $inthost:${ipmin#!}${ipmax:+-$ipmax}
|
||||||
|
|
||||||
iptables -t nat -A nat_reflection_out \
|
iptables -t nat -A nat_reflection_out \
|
||||||
-s $lannet -d $inthost \
|
-s $intnet -d $inthost \
|
||||||
-p $p $intport \
|
-p $p $intport \
|
||||||
-j SNAT --to-source ${lannet%%/*}
|
-m comment --comment "$INTERFACE" \
|
||||||
|
-j SNAT --to-source ${intnet%%/*}
|
||||||
|
|
||||||
iptables -t filter -A nat_reflection_fwd \
|
iptables -t filter -A nat_reflection_fwd \
|
||||||
-s $lannet -d $inthost \
|
-s $intnet -d $inthost \
|
||||||
-p $p $intport \
|
-p $p $intport \
|
||||||
-j ACCEPT
|
-m comment --comment "$INTERFACE" \
|
||||||
;;
|
-j ACCEPT
|
||||||
esac
|
;;
|
||||||
done
|
esac
|
||||||
done
|
done
|
||||||
}
|
done
|
||||||
}
|
}
|
||||||
|
|
||||||
config_load firewall
|
config_load firewall
|
||||||
|
|
||||||
|
local is_masq_zone="$(find_networks "$ZONE" 1)"
|
||||||
|
[ -n "$is_masq_zone" ] || exit 0
|
||||||
|
|
||||||
|
local extip
|
||||||
|
network_get_ipaddr extip "$INTERFACE" || exit 0
|
||||||
|
|
||||||
config_foreach setup_fwd redirect
|
config_foreach setup_fwd redirect
|
||||||
fi
|
fi
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user