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fwbuilder/test/ipt/heartbeat_cluster_2_linux-1.fw.orig

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#!/bin/sh
#
# This is automatically generated file. DO NOT MODIFY !
#
# Firewall Builder fwb_ipt v4.2.0.3482
#
# Generated Sat Feb 19 15:27:39 2011 PST 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 && $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 $PGM &>/dev/null || {
echo "$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 "$cmd" in
start)
log "Activating firewall script generated Sat Feb 19 15:27:39 2011 by vadim"
check_tools
prolog_commands
check_run_time_address_table_files
load_modules "nat "
configure_interfaces
verify_interfaces
reset_all
script_body
ip_forward
epilog_commands
RETVAL=$?
;;
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
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