mirror of
https://github.com/fwbuilder/fwbuilder
synced 2026-03-19 09:47:20 +01:00
f366e2dc66
3178186 "Add ND/NS allow rules for the FORWARD chain". Rules that are added automatically to ipv6 Linux firewall to permit neighbor discovery packets should be also added to the FORWARD chain if the firewall is a bridge. see #2323
505 lines
13 KiB
Bash
Executable File
505 lines
13 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 17:52:17 2011 PDT by vadim
|
|
#
|
|
# files: * firewall31.fw /etc/fw/firewall31.fw
|
|
#
|
|
# Compiled for iptables (any version)
|
|
#
|
|
# used to test time matching rules
|
|
|
|
|
|
|
|
|
|
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
|
|
}
|
|
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
|
|
}
|
|
|
|
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() {
|
|
:
|
|
|
|
}
|
|
|
|
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_addresses_of_interface "eth0 33.33.33.33/24" ""
|
|
update_addresses_of_interface "eth1 192.168.1.1/24" ""
|
|
getaddr ppp0 i_ppp0
|
|
getaddr6 ppp0 i_ppp0_v6
|
|
}
|
|
|
|
script_body() {
|
|
echo 30 > /proc/sys/net/ipv4/tcp_fin_timeout
|
|
echo 1800 > /proc/sys/net/ipv4/tcp_keepalive_intvl
|
|
|
|
|
|
# ================ 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 'filter', rule set Policy
|
|
#
|
|
# Rule 0 (global)
|
|
#
|
|
echo "Rule 0 (global)"
|
|
#
|
|
$IPTABLES -N RULE_0
|
|
$IPTABLES -A INPUT -s 192.168.1.0/24 -m time --timestart 00:00 --timestop 23:59 --days Sat -j RULE_0
|
|
$IPTABLES -A OUTPUT -s 192.168.1.0/24 -m time --timestart 00:00 --timestop 23:59 --days Sat -j RULE_0
|
|
$IPTABLES -A FORWARD -s 192.168.1.0/24 -m time --timestart 00:00 --timestop 23:59 --days Sat -j RULE_0
|
|
$IPTABLES -A RULE_0 -j LOG --log-level info --log-prefix "RULE 0 -- DENY "
|
|
$IPTABLES -A RULE_0 -j DROP
|
|
#
|
|
# Rule 1 (global)
|
|
#
|
|
echo "Rule 1 (global)"
|
|
#
|
|
$IPTABLES -N RULE_1
|
|
$IPTABLES -A INPUT -s 192.168.1.0/24 -m state --state NEW -m time --timestart 18:00 --timestop 23:59 -j RULE_1
|
|
$IPTABLES -A OUTPUT -s 192.168.1.0/24 -m state --state NEW -m time --timestart 18:00 --timestop 23:59 -j RULE_1
|
|
$IPTABLES -A FORWARD -s 192.168.1.0/24 -m state --state NEW -m time --timestart 18:00 --timestop 23:59 -j RULE_1
|
|
$IPTABLES -A RULE_1 -j LOG --log-level info --log-prefix "RULE 1 -- ACCEPT "
|
|
$IPTABLES -A RULE_1 -j ACCEPT
|
|
#
|
|
# Rule 2 (global)
|
|
#
|
|
echo "Rule 2 (global)"
|
|
#
|
|
$IPTABLES -A INPUT -s 192.168.1.0/24 -m state --state NEW -m time --timestart 00:00 --timestop 23:59 --days Sat,Sun -j ACCEPT
|
|
$IPTABLES -A OUTPUT -s 192.168.1.0/24 -m state --state NEW -m time --timestart 00:00 --timestop 23:59 --days Sat,Sun -j ACCEPT
|
|
$IPTABLES -A FORWARD -s 192.168.1.0/24 -m state --state NEW -m time --timestart 00:00 --timestop 23:59 --days Sat,Sun -j ACCEPT
|
|
#
|
|
# Rule 3 (global)
|
|
#
|
|
echo "Rule 3 (global)"
|
|
#
|
|
$IPTABLES -N RULE_3
|
|
$IPTABLES -A INPUT -s 192.168.1.0/24 -m state --state NEW -m time --timestart 09:00 --timestop 17:00 --days Mon,Tue,Wed,Thu,Fri -j RULE_3
|
|
$IPTABLES -A OUTPUT -s 192.168.1.0/24 -m state --state NEW -m time --timestart 09:00 --timestop 17:00 --days Mon,Tue,Wed,Thu,Fri -j RULE_3
|
|
$IPTABLES -A FORWARD -s 192.168.1.0/24 -m state --state NEW -m time --timestart 09:00 --timestop 17:00 --days Mon,Tue,Wed,Thu,Fri -j RULE_3
|
|
$IPTABLES -A RULE_3 -j LOG --log-level info --log-prefix "RULE 3 -- ACCEPT "
|
|
$IPTABLES -A RULE_3 -j ACCEPT
|
|
#
|
|
# Rule 4 (global)
|
|
#
|
|
echo "Rule 4 (global)"
|
|
#
|
|
$IPTABLES -N Cid4299E23B.0
|
|
$IPTABLES -A INPUT -s 192.168.1.0/24 -m state --state NEW -j Cid4299E23B.0
|
|
$IPTABLES -A OUTPUT -s 192.168.1.0/24 -m state --state NEW -j Cid4299E23B.0
|
|
$IPTABLES -A FORWARD -s 192.168.1.0/24 -m state --state NEW -j Cid4299E23B.0
|
|
$IPTABLES -A Cid4299E23B.0 -m time --timestart 00:00 --timestop 23:59 --days Sat,Sun -j RETURN
|
|
$IPTABLES -N RULE_4_3
|
|
$IPTABLES -A Cid4299E23B.0 -j RULE_4_3
|
|
$IPTABLES -A RULE_4_3 -j LOG --log-level info --log-prefix "RULE 4 -- ACCEPT "
|
|
$IPTABLES -A RULE_4_3 -j ACCEPT
|
|
#
|
|
# Rule 5 (global)
|
|
#
|
|
echo "Rule 5 (global)"
|
|
#
|
|
$IPTABLES -N Cid4299E247.0
|
|
$IPTABLES -A INPUT -s 192.168.1.0/24 -m state --state NEW -j Cid4299E247.0
|
|
$IPTABLES -A OUTPUT -s 192.168.1.0/24 -m state --state NEW -j Cid4299E247.0
|
|
$IPTABLES -A FORWARD -s 192.168.1.0/24 -m state --state NEW -j Cid4299E247.0
|
|
$IPTABLES -A Cid4299E247.0 -m time --timestart 00:00 --timestop 23:59 --days Sat -j RETURN
|
|
$IPTABLES -A Cid4299E247.0 -m time --timestart 00:00 --timestop 23:59 --days Sun -j RETURN
|
|
$IPTABLES -N RULE_5_3
|
|
$IPTABLES -A Cid4299E247.0 -j RULE_5_3
|
|
$IPTABLES -A RULE_5_3 -j LOG --log-level info --log-prefix "RULE 5 -- ACCEPT "
|
|
$IPTABLES -A RULE_5_3 -j ACCEPT
|
|
#
|
|
# Rule 6 (global)
|
|
#
|
|
echo "Rule 6 (global)"
|
|
#
|
|
$IPTABLES -N RULE_6
|
|
$IPTABLES -A OUTPUT -j RULE_6
|
|
$IPTABLES -A INPUT -j RULE_6
|
|
$IPTABLES -A FORWARD -j RULE_6
|
|
$IPTABLES -A RULE_6 -j LOG --log-level info --log-prefix "RULE 6 -- DENY "
|
|
$IPTABLES -A RULE_6 -j DROP
|
|
}
|
|
|
|
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 "$cmd" in
|
|
start)
|
|
log "Activating firewall script generated Sun Apr 10 17:52:17 2011 by vadim"
|
|
check_tools
|
|
prolog_commands
|
|
check_run_time_address_table_files
|
|
|
|
load_modules " "
|
|
configure_interfaces
|
|
verify_interfaces
|
|
|
|
reset_all
|
|
|
|
script_body
|
|
ip_forward
|
|
epilog_commands
|
|
RETVAL=$?
|
|
;;
|
|
|
|
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 |