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fwbuilder/test/ipt/firewall2-5.fw.orig
Vadim Kurland f366e2dc66 * PolicyCompiler_PrintRule.cpp (_printOptionalGlobalRules): SF bug 
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
2011-04-10 17:58:32 -07:00

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#!/bin/sh
#
# This is automatically generated file. DO NOT MODIFY !
#
# Firewall Builder fwb_ipt v4.2.0.3523
#
# Generated Sun Apr 10 17:52:06 2011 PDT by vadim
#
# files: * firewall2-5.fw /etc/fw/firewall2-5.fw
#
# Compiled for iptables (any version)
#
# various tests for the "-o itf" clause in SNAT rules
# firewall2-5:NAT:4: warning: Adding of virtual address for address range is not implemented (object r-222.222.222.0)
# firewall2-5:NAT:6: error: Original and translated source should both be networks of the same size.
# firewall2-5:NAT:7: warning: Adding of virtual address for address range is not implemented (object range 33 30-33)
# firewall2-5::: warning: Can not add virtual address 22.22.22.0 (object external_net)
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 $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() {
:
}
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 192.168.1.1/24" ""
update_addresses_of_interface "eth1 222.222.222.222/24 222.222.222.40/24 222.222.222.41/24" ""
update_addresses_of_interface "eth3 33.33.33.25/29" ""
update_addresses_of_interface "eth2 33.33.33.3/29 33.33.33.4/29" ""
update_addresses_of_interface "lo 127.0.0.1/8" ""
}
script_body() {
echo 1 > /proc/sys/net/ipv4/conf/all/rp_filter
echo 0 > /proc/sys/net/ipv4/conf/all/accept_source_route
echo 0 > /proc/sys/net/ipv4/conf/all/accept_redirects
echo 1 > /proc/sys/net/ipv4/conf/all/log_martians
echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all
echo 1 > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses
echo 30 > /proc/sys/net/ipv4/tcp_fin_timeout
echo 1800 > /proc/sys/net/ipv4/tcp_keepalive_intvl
# ================ IPv4
# ================ Table 'filter', automatic rules
$IPTABLES -A FORWARD -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
# 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
# drop TCP sessions opened prior firewall restart
$IPTABLES -A INPUT -p tcp -m tcp ! --tcp-flags SYN,RST,ACK SYN -m state --state NEW -j DROP
$IPTABLES -A OUTPUT -p tcp -m tcp ! --tcp-flags SYN,RST,ACK SYN -m state --state NEW -j DROP
$IPTABLES -A FORWARD -p tcp -m tcp ! --tcp-flags SYN,RST,ACK SYN -m state --state NEW -j DROP
# drop packets that do not match any valid state and log them
$IPTABLES -N drop_invalid
$IPTABLES -A OUTPUT -m state --state INVALID -j drop_invalid
$IPTABLES -A INPUT -m state --state INVALID -j drop_invalid
$IPTABLES -A FORWARD -m state --state INVALID -j drop_invalid
$IPTABLES -A drop_invalid -j ULOG --ulog-nlgroup 1 --ulog-qthreshold 1 --ulog-prefix "INVALID state -- DENY "
$IPTABLES -A drop_invalid -j DROP
# ================ Table 'nat', rule set NAT
#
# Rule 0 (NAT)
#
echo "Rule 0 (NAT)"
#
# NETMAP and no -o itf
$IPTABLES -t nat -A POSTROUTING -s 192.168.1.0/24 -j NETMAP --to 22.22.22.0/24
#
# Rule 1 (NAT)
#
echo "Rule 1 (NAT)"
#
$IPTABLES -t nat -A POSTROUTING -o eth+ -s 192.168.1.0/24 -j SNAT --to-source 222.222.222.40
$IPTABLES -t nat -A POSTROUTING -o eth+ -s 192.168.1.0/24 -j SNAT --to-source 222.222.222.41
#
# Rule 2 (NAT)
#
echo "Rule 2 (NAT)"
#
#
$IPTABLES -t nat -A POSTROUTING -o eth+ -s 192.168.1.0/24 -j SNAT --to-source 222.222.222.222
#
# Rule 3 (NAT)
#
echo "Rule 3 (NAT)"
#
#
$IPTABLES -t nat -A POSTROUTING -o eth1 -s 192.168.1.0/24 -j SNAT --to-source 222.222.222.222
#
# Rule 4 (NAT)
#
echo "Rule 4 (NAT)"
#
# should be -o eth1
# firewall2-5:NAT:4: warning: Adding of virtual address for address range is not implemented (object r-222.222.222.0)
$IPTABLES -t nat -A POSTROUTING -o eth+ -s 192.168.1.0/24 -j SNAT --to-source 222.222.222.10-222.222.222.100
#
# Rule 5 (NAT)
#
echo "Rule 5 (NAT)"
#
# should be -o eth2
$IPTABLES -t nat -A POSTROUTING -o eth+ -s 192.168.1.0/24 -j SNAT --to-source 33.33.33.1-33.33.33.3
#
# Rule 7 (NAT)
#
echo "Rule 7 (NAT)"
#
# partially matches eth3
# firewall2-5:NAT:7: warning: Adding of virtual address for address range is not implemented (object range 33 30-33)
$IPTABLES -t nat -A POSTROUTING -o eth+ -s 192.168.1.0/24 -j SNAT --to-source 33.33.33.30-33.33.33.33
#
# Rule 8 (NAT)
#
echo "Rule 8 (NAT)"
#
# should be two rules: -o eth2 and -o eth3
$IPTABLES -t nat -A POSTROUTING -o eth+ -s 192.168.1.0/24 -j SNAT --to-source 33.33.33.1-33.33.33.33
#
# Rule 9 (NAT)
#
echo "Rule 9 (NAT)"
#
# should be -o eth2
$IPTABLES -t nat -A POSTROUTING -o eth2 -s 192.168.1.0/24 -j SNAT --to-source 33.33.33.3
$IPTABLES -t nat -A POSTROUTING -o eth2 -s 192.168.1.0/24 -j SNAT --to-source 33.33.33.4
# ================ Table 'filter', rule set Policy
#
# Rule 0 (global)
#
echo "Rule 0 (global)"
#
# 'catch all' rule
$IPTABLES -N RULE_0
$IPTABLES -A OUTPUT -j RULE_0
$IPTABLES -A INPUT -j RULE_0
$IPTABLES -A FORWARD -j RULE_0
$IPTABLES -A RULE_0 -m limit --limit 5/second -j ULOG --ulog-nlgroup 1 --ulog-prefix "RULE 0 - DENY **" --ulog-qthreshold 1
$IPTABLES -A RULE_0 -j DROP
}
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 "$cmd" in
start)
log "Activating firewall script generated Sun Apr 10 17:52:06 2011 by vadim"
check_tools
check_run_time_address_table_files
load_modules "nat "
configure_interfaces
verify_interfaces
reset_all
prolog_commands
script_body
ip_forward
epilog_commands
RETVAL=$?
;;
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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