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firewall: allow multiple interfaces to be part of one zone, fix the sanity checks for that

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SVN-Revision: 14058
This commit is contained in:
Felix Fietkau
2009-01-16 17:39:03 +00:00
parent 5ebc074df4
commit 5b58a8db1f
2 changed files with 52 additions and 39 deletions
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77
package/firewall/files/uci_firewall.sh
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@@ -55,39 +55,56 @@ create_zone() {
}
addif() {
local dev
config_get dev core $2
[ -n "$dev" -a "$dev" != "$1" ] && delif "$dev" "$2"
[ -n "$dev" -a "$dev" == "$1" ] && return
logger "adding $1 to firewall zone $2"
$IPTABLES -A input -i $1 -j zone_$2
$IPTABLES -I zone_$2_MSSFIX 1 -o $1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
$IPTABLES -I zone_$2_ACCEPT 1 -o $1 -j ACCEPT
$IPTABLES -I zone_$2_DROP 1 -o $1 -j DROP
$IPTABLES -I zone_$2_REJECT 1 -o $1 -j reject
$IPTABLES -I zone_$2_ACCEPT 1 -i $1 -j ACCEPT
$IPTABLES -I zone_$2_DROP 1 -i $1 -j DROP
$IPTABLES -I zone_$2_REJECT 1 -i $1 -j reject
$IPTABLES -I zone_$2_nat 1 -t nat -o $1 -j MASQUERADE
$IPTABLES -I PREROUTING 1 -t nat -i $1 -j zone_$2_prerouting
$IPTABLES -A forward -i $1 -j zone_$2_forward
uci_set_state firewall core "$2" "$1"
local network="$1"
local ifname="$2"
local zone="$3"
local n_if n_zone
config_get n_if core "${network}_ifname"
config_get n_zone core "${network}_zone"
[ -n "$n_zone" ] && {
if [ "$n_zone" != "$zone" ]; then
delif "$network" "$n_if" "$n_zone"
else
return
fi
}
logger "adding $network ($ifname) to firewall zone $zone"
$IPTABLES -A input -i "$ifname" -j zone_${zone}
$IPTABLES -I zone_${zone}_MSSFIX 1 -o "$ifname" -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
$IPTABLES -I zone_${zone}_ACCEPT 1 -o "$ifname" -j ACCEPT
$IPTABLES -I zone_${zone}_DROP 1 -o "$ifname" -j DROP
$IPTABLES -I zone_${zone}_REJECT 1 -o "$ifname" -j reject
$IPTABLES -I zone_${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
$IPTABLES -A forward -i "$ifname" -j zone_${zone}_forward
uci_set_state firewall core "${network}_ifname" "$ifname"
uci_set_state firewall core "${network}_zone" "$zone"
}
delif() {
logger "removing $1 from firewall zone $2"
$IPTABLES -D input -i $1 -j zone_$2
$IPTABLES -D zone_$2_MSSFIX -o $1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
$IPTABLES -D zone_$2_ACCEPT -o $1 -j ACCEPT
$IPTABLES -D zone_$2_DROP -o $1 -j DROP
$IPTABLES -D zone_$2_REJECT -o $1 -j reject
$IPTABLES -D zone_$2_ACCEPT -i $1 -j ACCEPT
$IPTABLES -D zone_$2_DROP -i $1 -j DROP
$IPTABLES -D zone_$2_REJECT -i $1 -j reject
$IPTABLES -D zone_$2_nat -t nat -o $1 -j MASQUERADE
$IPTABLES -D PREROUTING -t nat -i $1 -j zone_$2_prerouting
$IPTABLES -D forward -i $1 -j zone_$2_forward
uci_revert_state firewall core "$2"
local network="$1"
local ifname="$2"
local zone="$3"
logger "removing $network ($ifname) from firewall zone $zone"
$IPTABLES -D input -i "$ifname" -j zone_$zone
$IPTABLES -D zone_${zone}_MSSFIX -o "$ifname" -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
$IPTABLES -D zone_${zone}_ACCEPT -o "$ifname" -j ACCEPT
$IPTABLES -D zone_${zone}_DROP -o "$ifname" -j DROP
$IPTABLES -D zone_${zone}_REJECT -o "$ifname" -j reject
$IPTABLES -D zone_${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
$IPTABLES -D forward -i "$ifname" -j zone_${zone}_forward
uci_revert_state firewall core "${network}_ifname"
uci_revert_state firewall core "${network}_zone"
}
load_synflood() {