mirror of
https://github.com/fwbuilder/fwbuilder
synced 2026-03-20 02:07:23 +01:00
MAC-matching rules not generated properly". Iptables NAT rules matching a group of host objects with both IP and MAC addresses each in "Original Source" were not generated properly.
767 lines
20 KiB
Bash
Executable File
767 lines
20 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
# This is automatically generated file. DO NOT MODIFY !
|
|
#
|
|
# Firewall Builder fwb_ipt v4.2.0.3523
|
|
#
|
|
# Generated Sun Apr 10 18:50:09 2011 PDT by vadim
|
|
#
|
|
# files: * heartbeat_cluster_2_linux-1.fw /etc/heartbeat_cluster_2_linux-1.fw
|
|
#
|
|
# Compiled for iptables (any version)
|
|
#
|
|
#
|
|
|
|
# linux-1:to_fw:: warning: ignoring cluster rule set "to_fw" because member firewall "linux-1" has rule set with the same name.
|
|
|
|
|
|
FWBDEBUG=""
|
|
|
|
PATH="/sbin:/usr/sbin:/bin:/usr/bin:${PATH}"
|
|
export PATH
|
|
|
|
|
|
|
|
LSMOD="/sbin/lsmod"
|
|
MODPROBE="/sbin/modprobe"
|
|
IPTABLES="/sbin/iptables"
|
|
IP6TABLES="/sbin/ip6tables"
|
|
IPTABLES_RESTORE="/sbin/iptables-restore"
|
|
IP6TABLES_RESTORE="/sbin/ip6tables-restore"
|
|
IP="/sbin/ip"
|
|
IFCONFIG="/sbin/ifconfig"
|
|
VCONFIG="/sbin/vconfig"
|
|
BRCTL="/sbin/brctl"
|
|
IFENSLAVE="/sbin/ifenslave"
|
|
IPSET="/usr/sbin/ipset"
|
|
LOGGER="/usr/bin/logger"
|
|
|
|
log() {
|
|
echo "$1"
|
|
command -v "$LOGGER" >/dev/null 2>&1 && $LOGGER -p info "$1"
|
|
}
|
|
|
|
getInterfaceVarName() {
|
|
echo $1 | sed 's/\./_/'
|
|
}
|
|
|
|
getaddr_internal() {
|
|
dev=$1
|
|
name=$2
|
|
af=$3
|
|
L=$($IP $af addr show dev $dev | sed -n '/inet/{s!.*inet6* !!;s!/.*!!p}' | sed 's/peer.*//')
|
|
test -z "$L" && {
|
|
eval "$name=''"
|
|
return
|
|
}
|
|
eval "${name}_list=\"$L\""
|
|
}
|
|
|
|
getaddr() {
|
|
getaddr_internal $1 $2 "-4"
|
|
}
|
|
|
|
getaddr6() {
|
|
getaddr_internal $1 $2 "-6"
|
|
}
|
|
|
|
# function getinterfaces is used to process wildcard interfaces
|
|
getinterfaces() {
|
|
NAME=$1
|
|
$IP link show | grep ": $NAME" | while read L; do
|
|
OIFS=$IFS
|
|
IFS=" :"
|
|
set $L
|
|
IFS=$OIFS
|
|
echo $2
|
|
done
|
|
}
|
|
|
|
diff_intf() {
|
|
func=$1
|
|
list1=$2
|
|
list2=$3
|
|
cmd=$4
|
|
for intf in $list1
|
|
do
|
|
echo $list2 | grep -q $intf || {
|
|
# $vlan is absent in list 2
|
|
$func $intf $cmd
|
|
}
|
|
done
|
|
}
|
|
|
|
find_program() {
|
|
PGM=$1
|
|
command -v $PGM >/dev/null 2>&1 || {
|
|
echo "$PGM not found"
|
|
exit 1
|
|
}
|
|
}
|
|
check_tools() {
|
|
find_program $IPTABLES
|
|
find_program $MODPROBE
|
|
find_program $IP
|
|
find_program $VCONFIG
|
|
}
|
|
reset_iptables_v4() {
|
|
$IPTABLES -P OUTPUT DROP
|
|
$IPTABLES -P INPUT DROP
|
|
$IPTABLES -P FORWARD DROP
|
|
|
|
cat /proc/net/ip_tables_names | while read table; do
|
|
$IPTABLES -t $table -L -n | while read c chain rest; do
|
|
if test "X$c" = "XChain" ; then
|
|
$IPTABLES -t $table -F $chain
|
|
fi
|
|
done
|
|
$IPTABLES -t $table -X
|
|
done
|
|
}
|
|
|
|
reset_iptables_v6() {
|
|
$IP6TABLES -P OUTPUT DROP
|
|
$IP6TABLES -P INPUT DROP
|
|
$IP6TABLES -P FORWARD DROP
|
|
|
|
cat /proc/net/ip6_tables_names | while read table; do
|
|
$IP6TABLES -t $table -L -n | while read c chain rest; do
|
|
if test "X$c" = "XChain" ; then
|
|
$IP6TABLES -t $table -F $chain
|
|
fi
|
|
done
|
|
$IP6TABLES -t $table -X
|
|
done
|
|
}
|
|
|
|
|
|
P2P_INTERFACE_WARNING=""
|
|
|
|
missing_address() {
|
|
address=$1
|
|
cmd=$2
|
|
|
|
oldIFS=$IFS
|
|
IFS="@"
|
|
set $address
|
|
addr=$1
|
|
interface=$2
|
|
IFS=$oldIFS
|
|
|
|
|
|
|
|
$IP addr show dev $interface | grep -q POINTOPOINT && {
|
|
test -z "$P2P_INTERFACE_WARNING" && echo "Warning: Can not update address of interface $interface. fwbuilder can not manage addresses of point-to-point interfaces yet"
|
|
P2P_INTERFACE_WARNING="yes"
|
|
return
|
|
}
|
|
|
|
test "$cmd" = "add" && {
|
|
echo "# Adding ip address: $interface $addr"
|
|
echo $addr | grep -q ':' && {
|
|
$FWBDEBUG $IP addr $cmd $addr dev $interface
|
|
} || {
|
|
$FWBDEBUG $IP addr $cmd $addr broadcast + dev $interface
|
|
}
|
|
}
|
|
|
|
test "$cmd" = "del" && {
|
|
echo "# Removing ip address: $interface $addr"
|
|
$FWBDEBUG $IP addr $cmd $addr dev $interface || exit 1
|
|
}
|
|
|
|
$FWBDEBUG $IP link set $interface up
|
|
}
|
|
|
|
list_addresses_by_scope() {
|
|
interface=$1
|
|
scope=$2
|
|
ignore_list=$3
|
|
$IP addr ls dev $interface | \
|
|
awk -v IGNORED="$ignore_list" -v SCOPE="$scope" \
|
|
'BEGIN {
|
|
split(IGNORED,ignored_arr);
|
|
for (a in ignored_arr) {ignored_dict[ignored_arr[a]]=1;}
|
|
}
|
|
(/inet |inet6 / && $0 ~ SCOPE && !($2 in ignored_dict)) {print $2;}' | \
|
|
while read addr; do
|
|
echo "${addr}@$interface"
|
|
done | sort
|
|
}
|
|
|
|
|
|
update_addresses_of_interface() {
|
|
ignore_list=$2
|
|
set $1
|
|
interface=$1
|
|
shift
|
|
|
|
FWB_ADDRS=$(
|
|
for addr in $*; do
|
|
echo "${addr}@$interface"
|
|
done | sort
|
|
)
|
|
|
|
CURRENT_ADDRS_ALL_SCOPES=""
|
|
CURRENT_ADDRS_GLOBAL_SCOPE=""
|
|
|
|
$IP link show dev $interface >/dev/null 2>&1 && {
|
|
CURRENT_ADDRS_ALL_SCOPES=$(list_addresses_by_scope $interface 'scope .*' "$ignore_list")
|
|
CURRENT_ADDRS_GLOBAL_SCOPE=$(list_addresses_by_scope $interface 'scope global' "$ignore_list")
|
|
} || {
|
|
echo "# Interface $interface does not exist"
|
|
# Stop the script if we are not in test mode
|
|
test -z "$FWBDEBUG" && exit 1
|
|
}
|
|
|
|
diff_intf missing_address "$FWB_ADDRS" "$CURRENT_ADDRS_ALL_SCOPES" add
|
|
diff_intf missing_address "$CURRENT_ADDRS_GLOBAL_SCOPE" "$FWB_ADDRS" del
|
|
}
|
|
|
|
clear_addresses_except_known_interfaces() {
|
|
$IP link show | sed 's/://g' | awk -v IGNORED="$*" \
|
|
'BEGIN {
|
|
split(IGNORED,ignored_arr);
|
|
for (a in ignored_arr) {ignored_dict[ignored_arr[a]]=1;}
|
|
}
|
|
(/state/ && !($2 in ignored_dict)) {print $2;}' | \
|
|
while read intf; do
|
|
echo "# Removing addresses not configured in fwbuilder from interface $intf"
|
|
$FWBDEBUG $IP addr flush dev $intf scope global
|
|
$FWBDEBUG $IP link set $intf down
|
|
done
|
|
}
|
|
missing_vlan() {
|
|
vlan=$1
|
|
cmd=$2
|
|
|
|
oldIFS=$IFS
|
|
IFS="@"
|
|
set $vlan
|
|
subint=$1
|
|
parent=$2
|
|
IFS=$oldIFS
|
|
|
|
vlan_id=$(echo $subint | sed -r 's/(vlan|[^.]*\.)//')
|
|
test "$cmd" = "add" && {
|
|
echo $subint | grep -q "vlan" && name_type="VLAN_PLUS_VID" || name_type="DEV_PLUS_VID"
|
|
test "$vlan_id" \< "1" || name_type="${name_type}_NO_PAD"
|
|
echo "# Adding VLAN interface $subint (parent: $parent)"
|
|
$FWBDEBUG $VCONFIG set_name_type $name_type
|
|
$FWBDEBUG $VCONFIG $cmd $parent $vlan_id
|
|
$FWBDEBUG $IP link set $subint up
|
|
}
|
|
test "$cmd" = "rem" && {
|
|
echo "# Removing VLAN interface $subint (parent: $parent)"
|
|
$FWBDEBUG $VCONFIG $cmd $subint
|
|
}
|
|
}
|
|
|
|
parse_fwb_vlans() {
|
|
set $1
|
|
vlan_parent_interface=$1
|
|
shift
|
|
|
|
FWB_VLANS=$(
|
|
for subint in $*; do
|
|
echo "${subint}@$vlan_parent_interface"
|
|
done | sort
|
|
)
|
|
echo $FWB_VLANS
|
|
}
|
|
|
|
parse_current_vlans() {
|
|
vlan_parent_interface=$1
|
|
CURRENT_VLANS=""
|
|
PROC_DIR="/proc/net/vlan/"
|
|
test -d $PROC_DIR || $MODPROBE 8021q || {
|
|
echo "$PROC_DIR does not exist. Vlan interfaces are not available."
|
|
exit 1
|
|
}
|
|
|
|
test -f "/proc/net/vlan/config" && {
|
|
CURRENT_VLANS=$(
|
|
cat /proc/net/vlan/config | grep -v 'Dev name' | grep $vlan_parent_interface | \
|
|
while read subint a vlan_id b parent; do
|
|
echo "${subint}@$parent"
|
|
done | sort
|
|
)
|
|
}
|
|
echo $CURRENT_VLANS
|
|
}
|
|
|
|
update_vlans_of_interface() {
|
|
args="$1"
|
|
set $1
|
|
vlan_parent_interface=$1
|
|
|
|
FWB_VLANS=$(parse_fwb_vlans "$args")
|
|
CURRENT_VLANS=$(parse_current_vlans $vlan_parent_interface)
|
|
|
|
$IP link set $vlan_parent_interface up
|
|
diff_intf missing_vlan "$FWB_VLANS" "$CURRENT_VLANS" add
|
|
diff_intf missing_vlan "$CURRENT_VLANS" "$FWB_VLANS" rem
|
|
}
|
|
|
|
add_vlans() {
|
|
args="$1"
|
|
set $1
|
|
vlan_parent_interface=$1
|
|
|
|
FWB_VLANS=$(parse_fwb_vlans $args)
|
|
CURRENT_VLANS=$(parse_current_vlans $vlan_parent_interface)
|
|
|
|
$IP link set $vlan_parent_interface up
|
|
diff_intf missing_vlan "$FWB_VLANS" "$CURRENT_VLANS" add
|
|
}
|
|
|
|
clear_vlans_except_known() {
|
|
FWB_VLANS=$*
|
|
CURRENT_VLANS=$(parse_current_vlans '|')
|
|
|
|
diff_intf missing_vlan "$CURRENT_VLANS" "$FWB_VLANS" rem
|
|
}
|
|
|
|
check_file() {
|
|
test -r "$2" || {
|
|
echo "Can not find file $2 referenced by address table object $1"
|
|
exit 1
|
|
}
|
|
}
|
|
|
|
check_run_time_address_table_files() {
|
|
:
|
|
|
|
}
|
|
|
|
load_modules() {
|
|
:
|
|
OPTS=$1
|
|
MODULES_DIR="/lib/modules/`uname -r`/kernel/net/"
|
|
MODULES=$(find $MODULES_DIR -name '*conntrack*' \! -name '*ipv6*'|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')
|
|
echo $OPTS | grep -q nat && {
|
|
MODULES="$MODULES $(find $MODULES_DIR -name '*nat*'|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')"
|
|
}
|
|
echo $OPTS | grep -q ipv6 && {
|
|
MODULES="$MODULES $(find $MODULES_DIR -name nf_conntrack_ipv6|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')"
|
|
}
|
|
for module in $MODULES; do
|
|
if $LSMOD | grep ${module} >/dev/null; then continue; fi
|
|
$MODPROBE ${module} || exit 1
|
|
done
|
|
}
|
|
|
|
verify_interfaces() {
|
|
:
|
|
echo "Verifying interfaces: eth0 eth1 lo eth0.100"
|
|
for i in eth0 eth1 lo eth0.100 ; do
|
|
$IP link show "$i" > /dev/null 2>&1 || {
|
|
log "Interface $i does not exist"
|
|
exit 1
|
|
}
|
|
done
|
|
}
|
|
|
|
prolog_commands() {
|
|
echo "Running prolog script"
|
|
|
|
}
|
|
|
|
epilog_commands() {
|
|
echo "Running epilog script"
|
|
|
|
}
|
|
|
|
run_epilog_and_exit() {
|
|
epilog_commands
|
|
exit $1
|
|
}
|
|
|
|
configure_interfaces() {
|
|
:
|
|
# Configure interfaces
|
|
update_vlans_of_interface "eth0 eth0.100"
|
|
clear_vlans_except_known eth0.100@eth0
|
|
update_addresses_of_interface "eth0 172.24.0.2/16" "172.24.0.1/16"
|
|
update_addresses_of_interface "eth1 192.168.1.2/24" "192.168.1.1/24"
|
|
update_addresses_of_interface "lo 127.0.0.1/8" ""
|
|
update_addresses_of_interface "eth0.100 192.168.100.1/24" ""
|
|
}
|
|
|
|
script_body() {
|
|
# ================ IPv4
|
|
|
|
|
|
# ================ Table 'filter', automatic rules
|
|
# accept established sessions
|
|
$IPTABLES -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
|
|
$IPTABLES -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
|
|
$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
|
|
|
|
|
|
# ================ Table 'nat', rule set NAT
|
|
#
|
|
# Rule 0 (NAT)
|
|
#
|
|
echo "Rule 0 (NAT)"
|
|
#
|
|
$IPTABLES -t nat -A POSTROUTING -o eth0 -s 192.168.1.0/24 -j SNAT --to-source 172.24.0.1
|
|
#
|
|
# Rule 1 (NAT)
|
|
#
|
|
echo "Rule 1 (NAT)"
|
|
#
|
|
$IPTABLES -t nat -A POSTROUTING -o eth0 -s 192.168.1.0/24 -j SNAT --to-source 172.24.0.1
|
|
|
|
|
|
|
|
# ================ Table 'filter', rule set to_fw
|
|
#
|
|
# Rule to_fw 0 (global)
|
|
#
|
|
echo "Rule to_fw 0 (global)"
|
|
#
|
|
# hashlimit 10/sec
|
|
$IPTABLES -N to_fw
|
|
$IPTABLES -N to_fw_0
|
|
$IPTABLES -A to_fw -m hashlimit --hashlimit 10/second --hashlimit-name htable_rule_0 -j to_fw_0
|
|
$IPTABLES -A to_fw_0 -j LOG --log-level info --log-prefix "RULE 0 -- DENY "
|
|
$IPTABLES -A to_fw_0 -j DROP
|
|
# ================ Table 'filter', rule set Policy
|
|
#
|
|
# Rule -4 heartbeat (automatic)
|
|
#
|
|
echo "Rule -4 heartbeat (automatic)"
|
|
#
|
|
$IPTABLES -A OUTPUT -o eth0 -p udp -m udp -d 172.24.0.3 --dport 694 -j ACCEPT
|
|
#
|
|
# Rule -3 heartbeat (automatic)
|
|
#
|
|
echo "Rule -3 heartbeat (automatic)"
|
|
#
|
|
$IPTABLES -A INPUT -i eth0 -p udp -m udp -s 172.24.0.3 --dport 694 -j ACCEPT
|
|
#
|
|
# Rule -2 CONNTRACK (automatic)
|
|
#
|
|
echo "Rule -2 CONNTRACK (automatic)"
|
|
#
|
|
$IPTABLES -A OUTPUT -o eth0 -p udp -m udp -d 172.24.0.3 --dport 3781 -j ACCEPT
|
|
#
|
|
# Rule -1 CONNTRACK (automatic)
|
|
#
|
|
echo "Rule -1 CONNTRACK (automatic)"
|
|
#
|
|
$IPTABLES -A INPUT -i eth0 -p udp -m udp -s 172.24.0.3 --dport 3781 -j ACCEPT
|
|
#
|
|
# Rule 0 (eth0)
|
|
#
|
|
echo "Rule 0 (eth0)"
|
|
#
|
|
$IPTABLES -A INPUT -i eth0 -p vrrp -d 224.0.0.18 -m state --state NEW -j ACCEPT
|
|
$IPTABLES -A OUTPUT -o eth0 -p vrrp -d 224.0.0.18 -m state --state NEW -j ACCEPT
|
|
#
|
|
# Rule 1 (eth0)
|
|
#
|
|
echo "Rule 1 (eth0)"
|
|
#
|
|
# anti spoofing rule
|
|
$IPTABLES -N In_RULE_1
|
|
$IPTABLES -A INPUT -i eth0 -s 172.24.0.1 -m state --state NEW -j In_RULE_1
|
|
$IPTABLES -A INPUT -i eth0 -s 172.24.0.2 -m state --state NEW -j In_RULE_1
|
|
$IPTABLES -A INPUT -i eth0 -s 192.168.1.1 -m state --state NEW -j In_RULE_1
|
|
$IPTABLES -A INPUT -i eth0 -s 192.168.1.2 -m state --state NEW -j In_RULE_1
|
|
$IPTABLES -A INPUT -i eth0 -s 192.168.100.1 -m state --state NEW -j In_RULE_1
|
|
$IPTABLES -A INPUT -i eth0 -s 192.168.1.0/24 -m state --state NEW -j In_RULE_1
|
|
$IPTABLES -A FORWARD -i eth0 -s 172.24.0.1 -m state --state NEW -j In_RULE_1
|
|
$IPTABLES -A FORWARD -i eth0 -s 172.24.0.2 -m state --state NEW -j In_RULE_1
|
|
$IPTABLES -A FORWARD -i eth0 -s 192.168.1.1 -m state --state NEW -j In_RULE_1
|
|
$IPTABLES -A FORWARD -i eth0 -s 192.168.1.2 -m state --state NEW -j In_RULE_1
|
|
$IPTABLES -A FORWARD -i eth0 -s 192.168.100.1 -m state --state NEW -j In_RULE_1
|
|
$IPTABLES -A FORWARD -i eth0 -s 192.168.1.0/24 -m state --state NEW -j In_RULE_1
|
|
$IPTABLES -A In_RULE_1 -j LOG --log-level info --log-prefix "RULE 1 -- DENY "
|
|
$IPTABLES -A In_RULE_1 -j DROP
|
|
#
|
|
# Rule 2 (lo)
|
|
#
|
|
echo "Rule 2 (lo)"
|
|
#
|
|
$IPTABLES -A INPUT -i lo -m state --state NEW -j ACCEPT
|
|
$IPTABLES -A OUTPUT -o lo -m state --state NEW -j ACCEPT
|
|
#
|
|
# Rule 3 (global)
|
|
#
|
|
echo "Rule 3 (global)"
|
|
#
|
|
# SSH Access to firewall is permitted
|
|
# only from internal network
|
|
$IPTABLES -A INPUT -p tcp -m tcp -s 192.168.1.0/24 --dport 22 -m state --state NEW -j ACCEPT
|
|
#
|
|
# Rule 4 (global)
|
|
#
|
|
echo "Rule 4 (global)"
|
|
#
|
|
# SSH Access to firewall is permitted
|
|
# only from internal network
|
|
$IPTABLES -A INPUT -p tcp -m tcp -s 192.168.1.0/24 -d 192.168.1.2 --dport 22 -m state --state NEW -j ACCEPT
|
|
$IPTABLES -A OUTPUT -p tcp -m tcp -s 192.168.1.0/24 -d 192.168.1.3 --dport 22 -m state --state NEW -j ACCEPT
|
|
$IPTABLES -A FORWARD -p tcp -m tcp -s 192.168.1.0/24 -d 192.168.1.3 --dport 22 -m state --state NEW -j ACCEPT
|
|
#
|
|
# Rule 5 (global)
|
|
#
|
|
echo "Rule 5 (global)"
|
|
#
|
|
# Firewall uses one of the machines
|
|
# on internal network for DNS
|
|
$IPTABLES -N RULE_5
|
|
$IPTABLES -A OUTPUT -p tcp -m tcp -d 192.168.1.0/24 --dport 53 -m state --state NEW -j RULE_5
|
|
$IPTABLES -A OUTPUT -p udp -m udp -d 192.168.1.0/24 --dport 53 -m state --state NEW -j RULE_5
|
|
$IPTABLES -A RULE_5 -j LOG --log-level info --log-prefix "RULE 5 -- ACCEPT "
|
|
$IPTABLES -A RULE_5 -j ACCEPT
|
|
#
|
|
# Rule 6 (global)
|
|
#
|
|
echo "Rule 6 (global)"
|
|
#
|
|
# branch rule set is different in members linux-1 and linux-2
|
|
$IPTABLES -A OUTPUT -d 172.24.0.1 -j to_fw
|
|
$IPTABLES -A OUTPUT -d 172.24.0.2 -j to_fw
|
|
$IPTABLES -A OUTPUT -d 192.168.1.1 -j to_fw
|
|
$IPTABLES -A OUTPUT -d 192.168.1.2 -j to_fw
|
|
$IPTABLES -A OUTPUT -d 192.168.100.1 -j to_fw
|
|
$IPTABLES -A INPUT -j to_fw
|
|
#
|
|
# Rule 7 (global)
|
|
#
|
|
echo "Rule 7 (global)"
|
|
#
|
|
# branch rule set is different in members linux-1 and linux-2
|
|
$IPTABLES -A OUTPUT -d 172.24.0.1 -j to_fw
|
|
$IPTABLES -A OUTPUT -d 172.24.0.2 -j to_fw
|
|
$IPTABLES -A OUTPUT -d 192.168.1.1 -j to_fw
|
|
$IPTABLES -A OUTPUT -d 192.168.1.2 -j to_fw
|
|
$IPTABLES -A OUTPUT -d 192.168.100.1 -j to_fw
|
|
$IPTABLES -A INPUT -j to_fw
|
|
#
|
|
# Rule 8 (global)
|
|
#
|
|
echo "Rule 8 (global)"
|
|
#
|
|
$IPTABLES -N RULE_8
|
|
$IPTABLES -A OUTPUT -d 172.24.0.1 -j RULE_8
|
|
$IPTABLES -A OUTPUT -d 172.24.0.2 -j RULE_8
|
|
$IPTABLES -A OUTPUT -d 192.168.1.1 -j RULE_8
|
|
$IPTABLES -A OUTPUT -d 192.168.1.2 -j RULE_8
|
|
$IPTABLES -A OUTPUT -d 192.168.100.1 -j RULE_8
|
|
$IPTABLES -A INPUT -j RULE_8
|
|
$IPTABLES -A RULE_8 -j LOG --log-level info --log-prefix "RULE 8 -- DENY "
|
|
$IPTABLES -A RULE_8 -j DROP
|
|
#
|
|
# Rule 9 (global)
|
|
#
|
|
echo "Rule 9 (global)"
|
|
#
|
|
$IPTABLES -A INPUT -s 192.168.1.0/24 -m state --state NEW -j ACCEPT
|
|
$IPTABLES -A OUTPUT -s 192.168.1.0/24 -m state --state NEW -j ACCEPT
|
|
$IPTABLES -A FORWARD -s 192.168.1.0/24 -m state --state NEW -j ACCEPT
|
|
#
|
|
# Rule 10 (global)
|
|
#
|
|
echo "Rule 10 (global)"
|
|
#
|
|
$IPTABLES -N RULE_10
|
|
$IPTABLES -A OUTPUT -m state --state NEW -j RULE_10
|
|
$IPTABLES -A INPUT -m state --state NEW -j RULE_10
|
|
$IPTABLES -A FORWARD -m state --state NEW -j RULE_10
|
|
$IPTABLES -A RULE_10 -j LOG --log-level info --log-prefix "RULE 10 -- DENY "
|
|
$IPTABLES -A RULE_10 -j DROP
|
|
#
|
|
# Rule 11 (global)
|
|
#
|
|
echo "Rule 11 (global)"
|
|
#
|
|
$IPTABLES -N RULE_11
|
|
$IPTABLES -A OUTPUT -j RULE_11
|
|
$IPTABLES -A INPUT -j RULE_11
|
|
$IPTABLES -A FORWARD -j RULE_11
|
|
$IPTABLES -A RULE_11 -j LOG --log-level info --log-prefix "RULE 11 -- DENY "
|
|
$IPTABLES -A RULE_11 -j DROP
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
# ============== ROUTING RULES ==============
|
|
|
|
TMPDIRNAME="/tmp/.fwbuilder.tempdir.$$"
|
|
TMPFILENAME="$TMPDIRNAME/.fwbuilder.out"
|
|
(umask 077 && mkdir $TMPDIRNAME) || exit 1
|
|
|
|
#
|
|
# This function stops stdout redirection
|
|
# and sends previously saved output to terminal
|
|
restore_script_output()
|
|
{
|
|
exec 1>&3 2>&1
|
|
cat $TMPFILENAME
|
|
rm -rf $TMPDIRNAME
|
|
}
|
|
|
|
# if any routing rule fails we do our best to prevent freezing the firewall
|
|
route_command_error()
|
|
{
|
|
echo "Error: Routing rule $1 couldn't be activated"
|
|
echo "Recovering previous routing configuration..."
|
|
# delete current routing rules
|
|
$IP route show | while read route ; do $IP route del $route ; done
|
|
# restore old routing rules
|
|
(IFS="
|
|
"; for route in $oldRoutes; do (IFS=' '; $IP route add $route); done)
|
|
echo "...done"
|
|
restore_script_output
|
|
epilog_commands
|
|
exit 1
|
|
}
|
|
|
|
# redirect output to prevent ssh session from stalling
|
|
exec 3>&1
|
|
exec 1> $TMPFILENAME
|
|
exec 2>&1
|
|
|
|
# store previous routing configuration (sort: 'via' GW has to be
|
|
# inserted after device routes)
|
|
oldRoutes=$($IP route show | sort -k 2)
|
|
|
|
echo "Deleting routing rules previously set by user space processes..."
|
|
$IP route show | grep -v '\( proto kernel \)\|\(default via \)' | \
|
|
while read route ; do $IP route del $route ; done
|
|
|
|
echo "Activating non-ecmp routing rules..."
|
|
#
|
|
# Rule 0 (main)
|
|
#
|
|
echo "Routing rule 0 (main)"
|
|
#
|
|
#
|
|
#
|
|
$IP route add 172.24.1.0/24 via 172.24.0.100 dev eth0 \
|
|
|| route_command_error "0 (main)"
|
|
|
|
|
|
restore_script_output
|
|
echo "...done."
|
|
}
|
|
|
|
ip_forward() {
|
|
:
|
|
echo 1 > /proc/sys/net/ipv4/ip_forward
|
|
}
|
|
|
|
reset_all() {
|
|
:
|
|
reset_iptables_v4
|
|
}
|
|
|
|
block_action() {
|
|
reset_all
|
|
}
|
|
|
|
stop_action() {
|
|
reset_all
|
|
$IPTABLES -P OUTPUT ACCEPT
|
|
$IPTABLES -P INPUT ACCEPT
|
|
$IPTABLES -P FORWARD ACCEPT
|
|
}
|
|
|
|
check_iptables() {
|
|
IP_TABLES="$1"
|
|
[ ! -e $IP_TABLES ] && return 151
|
|
NF_TABLES=$(cat $IP_TABLES 2>/dev/null)
|
|
[ -z "$NF_TABLES" ] && return 152
|
|
return 0
|
|
}
|
|
status_action() {
|
|
check_iptables "/proc/net/ip_tables_names"
|
|
ret_ipv4=$?
|
|
check_iptables "/proc/net/ip6_tables_names"
|
|
ret_ipv6=$?
|
|
[ $ret_ipv4 -eq 0 -o $ret_ipv6 -eq 0 ] && return 0
|
|
[ $ret_ipv4 -eq 151 -o $ret_ipv6 -eq 151 ] && {
|
|
echo "iptables modules are not loaded"
|
|
}
|
|
[ $ret_ipv4 -eq 152 -o $ret_ipv6 -eq 152 ] && {
|
|
echo "Firewall is not configured"
|
|
}
|
|
exit 3
|
|
}
|
|
|
|
# See how we were called.
|
|
# For backwards compatibility missing argument is equivalent to 'start'
|
|
|
|
cmd=$1
|
|
test -z "$cmd" && {
|
|
cmd="start"
|
|
}
|
|
|
|
case "$cmd" in
|
|
start)
|
|
log "Activating firewall script generated Sun Apr 10 18:50:09 2011 by vadim"
|
|
check_tools
|
|
prolog_commands
|
|
check_run_time_address_table_files
|
|
|
|
load_modules "nat "
|
|
configure_interfaces
|
|
verify_interfaces
|
|
|
|
reset_all
|
|
|
|
script_body
|
|
ip_forward
|
|
epilog_commands
|
|
RETVAL=$?
|
|
;;
|
|
|
|
stop)
|
|
stop_action
|
|
RETVAL=$?
|
|
;;
|
|
|
|
status)
|
|
status_action
|
|
RETVAL=$?
|
|
;;
|
|
|
|
block)
|
|
block_action
|
|
RETVAL=$?
|
|
;;
|
|
|
|
reload)
|
|
$0 stop
|
|
$0 start
|
|
RETVAL=$?
|
|
;;
|
|
|
|
interfaces)
|
|
configure_interfaces
|
|
RETVAL=$?
|
|
;;
|
|
|
|
test_interfaces)
|
|
FWBDEBUG="echo"
|
|
configure_interfaces
|
|
RETVAL=$?
|
|
;;
|
|
|
|
|
|
|
|
*)
|
|
echo "Usage $0 [start|stop|status|block|reload|interfaces|test_interfaces]"
|
|
;;
|
|
|
|
esac
|
|
|
|
exit $RETVAL |