mirror of
https://gitlab.com/shorewall/code.git
synced 2024-12-15 19:01:19 +01:00
d5b66d5820
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@5225 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
260 lines
7.3 KiB
Bash
260 lines
7.3 KiB
Bash
#!/bin/sh
|
|
#
|
|
# Shorewall 3.4 -- /usr/share/shorewall/lib.tcrules
|
|
#
|
|
# This program is under GPL [http://www.gnu.org/copyleft/gpl.htm]
|
|
#
|
|
# (c) 1999,2000,2001,2002,2003,2004,2005,2006,2007 - Tom Eastep (teastep@shorewall.net)
|
|
#
|
|
# Complete documentation is available at http://shorewall.net
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of Version 2 of the GNU General Public License
|
|
# as published by the Free Software Foundation.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA
|
|
#
|
|
# This library is loaded by /usr/share/shorewall/compiler when the maclist option
|
|
# is specified in an entry in the interfaces file.
|
|
#
|
|
|
|
#
|
|
# Set up MAC Verification
|
|
#
|
|
setup_mac_lists() # $1 = Phase Number
|
|
{
|
|
local interface
|
|
local mac
|
|
local addresses
|
|
local address
|
|
local chain
|
|
local chain1
|
|
local macpart
|
|
local blob
|
|
local hosts
|
|
local ipsec
|
|
local policy=
|
|
|
|
create_mac_chain()
|
|
{
|
|
case $MACLIST_TABLE in
|
|
filter)
|
|
createchain $1 no
|
|
;;
|
|
*)
|
|
createmanglechain $1
|
|
;;
|
|
esac
|
|
}
|
|
|
|
have_mac_chain()
|
|
{
|
|
local result
|
|
|
|
case $MACLIST_TABLE in
|
|
filter)
|
|
havechain $1 && result=0 || result=1
|
|
;;
|
|
*)
|
|
havemanglechain $1 && result=0 || result=1
|
|
;;
|
|
esac
|
|
|
|
return $result
|
|
}
|
|
#
|
|
# Generate the list of interfaces having MAC verification
|
|
#
|
|
maclist_interfaces=
|
|
|
|
for hosts in $maclist_hosts; do
|
|
hosts=${hosts#*^}
|
|
interface=${hosts%%:*}
|
|
if ! list_search $interface $maclist_interfaces; then\
|
|
if [ -z "$maclist_interfaces" ]; then
|
|
maclist_interfaces=$interface
|
|
else
|
|
maclist_interfaces="$maclist_interfaces $interface"
|
|
fi
|
|
fi
|
|
done
|
|
|
|
progress_message "$DOING MAC Verification on $maclist_interfaces -- Phase $1..."
|
|
#
|
|
# Create chains.
|
|
#
|
|
if [ $1 -eq 1 ]; then
|
|
for interface in $maclist_interfaces; do
|
|
chain=$(mac_chain $interface)
|
|
create_mac_chain $chain
|
|
#
|
|
# If we're using the mangle table and the interface is DHCP-enabled then we need to accept DHCP broadcasts from 0.0.0.0
|
|
#
|
|
if [ $MACLIST_TABLE = mangle ] && interface_has_option $interface dhcp; then
|
|
run_iptables -t mangle -A $chain -s 0.0.0.0 -d 255.255.255.255 -p udp --dport 67:68 -j RETURN
|
|
fi
|
|
|
|
if [ -n "$MACLIST_TTL" ]; then
|
|
chain1=$(macrecent_target $interface)
|
|
create_mac_chain $chain1
|
|
run_iptables -A $chain -t $MACLIST_TABLE -m recent --rcheck --seconds $MACLIST_TTL --name $chain -j RETURN
|
|
run_iptables -A $chain -t $MACLIST_TABLE -j $chain1
|
|
run_iptables -A $chain -t $MACLIST_TABLE -m recent --update --name $chain -j RETURN
|
|
run_iptables -A $chain -t $MACLIST_TABLE -m recent --set --name $chain
|
|
fi
|
|
done
|
|
#
|
|
# Process the maclist file producing the verification rules
|
|
#
|
|
while read disposition interface mac addresses; do
|
|
|
|
level=
|
|
|
|
case $disposition in
|
|
ACCEPT:*)
|
|
level=${disposition#*:}
|
|
disposition=ACCEPT
|
|
target=RETURN
|
|
;;
|
|
ACCEPT)
|
|
target=RETURN
|
|
;;
|
|
REJECT:*)
|
|
[ $MACLIST_TABLE = mangle ] && fatal_error "DISPOSITION = REJECT is incompatible with MACLIST_TABLE=mangle"
|
|
target=reject
|
|
disposition=REJECT
|
|
;;
|
|
REJECT)
|
|
[ $MACLIST_TABLE = mangle ] && fatal_error "DISPOSITION = REJECT is incompatible with MACLIST_TABLE=mangle"
|
|
target=reject
|
|
;;
|
|
DROP:*)
|
|
level=${disposition#*:}
|
|
disposition=DROP
|
|
target=DROP
|
|
;;
|
|
DROP)
|
|
target=DROP
|
|
;;
|
|
*)
|
|
addresses="$mac"
|
|
mac="$interface"
|
|
interface="$disposition"
|
|
disposition=ACCEPT
|
|
target=RETURN
|
|
;;
|
|
esac
|
|
|
|
physdev_part=
|
|
|
|
if [ -n "$BRIDGING" ]; then
|
|
case $interface in
|
|
*:*)
|
|
physdev_part="-m physdev --physdev-in ${interface#*:}"
|
|
interface=${interface%:*}
|
|
;;
|
|
esac
|
|
fi
|
|
|
|
[ -n "$MACLIST_TTL" ] && chain=$(macrecent_target $interface) || chain=$(mac_chain $interface)
|
|
|
|
if ! have_mac_chain $chain ; then
|
|
fatal_error "No hosts on $interface have the maclist option specified"
|
|
fi
|
|
|
|
if [ x${mac:=-} = x- ]; then
|
|
if [ -z "$addresses" ]; then
|
|
fatal_error "You must specify a MAC address or an IP address"
|
|
else
|
|
macpart=
|
|
fi
|
|
else
|
|
macpart=$(mac_match $mac)
|
|
fi
|
|
|
|
if [ -z "$addresses" ]; then
|
|
[ -n "$level" ] && \
|
|
log_rule_limit $level $chain $(mac_chain $interface) $disposition "$LOGLIMIT" "" -A -t $MACLIST_TABLE $macpart $physdev_part
|
|
run_iptables -A $chain -t $MACLIST_TABLE $macpart $physdev_part -j $target
|
|
else
|
|
for address in $(separate_list $addresses) ; do
|
|
[ -n "$level" ] && \
|
|
log_rule_limit $level $chain $(mac_chain $interface) $disposition "$LOGLIMIT" "" -A -t $MACLIST_TABLE $macpart -s $address $physdev_part
|
|
run_iptables2 -A $chain -t $MACLIST_TABLE $macpart -s $address $physdev_part -j $target
|
|
done
|
|
fi
|
|
done < $TMP_DIR/maclist
|
|
#
|
|
# Generate jumps from the input and forward chains
|
|
#
|
|
for hosts in $maclist_hosts; do
|
|
ipsec=${hosts%^*}
|
|
[ -n "$POLICY_MATCH" ] && policy="-m policy --pol $ipsec --dir in" || policy=
|
|
hosts=${hosts#*^}
|
|
interface=${hosts%%:*}
|
|
hosts=${hosts#*:}
|
|
case $MACLIST_TABLE in
|
|
filter)
|
|
for chain in $(first_chains $interface) ; do
|
|
run_iptables -A $chain $(match_source_hosts $hosts) -m state --state NEW \
|
|
$policy -j $(mac_chain $interface)
|
|
done
|
|
;;
|
|
*)
|
|
run_iptables -t mangle -A PREROUTING -i $interface $(match_source_hosts $hosts) -m state --state NEW \
|
|
$policy -j $(mac_chain $interface)
|
|
;;
|
|
esac
|
|
done
|
|
else
|
|
#
|
|
# Must take care of our own broadcasts and multicasts then terminate the verification
|
|
# chains
|
|
#
|
|
for interface in $maclist_interfaces; do
|
|
|
|
[ -n "$MACLIST_TTL" ] && chain=$(macrecent_target $interface) || chain=$(mac_chain $interface)
|
|
|
|
if [ -n "$MACLIST_LOG_LEVEL" -o $MACLIST_DISPOSITION != ACCEPT ]; then
|
|
indent >&3 << __EOF__
|
|
|
|
if interface_is_usable $interface; then
|
|
ip -f inet addr show $interface 2> /dev/null | grep 'inet.*brd' | sed 's/inet //; s/brd //; s/scope.*//;' | while read address broadcast; do
|
|
address=\${address%/*}
|
|
if [ -n "\$broadcast" ]; then
|
|
run_iptables -t $MACLIST_TABLE -A $chain -s \$address -d \$broadcast -j RETURN
|
|
fi
|
|
|
|
run_iptables -t $MACLIST_TABLE -A $chain -s \$address -d 255.255.255.255 -j RETURN
|
|
run_iptables -t $MACLIST_TABLE -A $chain -s \$address -d 224.0.0.0/4 -j RETURN
|
|
done
|
|
else
|
|
fatal_error "Interface $interface must be up before Shorewall can start"
|
|
fi
|
|
|
|
__EOF__
|
|
fi
|
|
|
|
CHAIN=$chain
|
|
|
|
append_file maclog
|
|
|
|
if [ -n "$MACLIST_LOG_LEVEL" ]; then
|
|
log_rule_limit $MACLIST_LOG_LEVEL $chain $(mac_chain $interface) $MACLIST_DISPOSITION "$LOGLIMIT" "" -A -t $MACLIST_TABLE
|
|
fi
|
|
|
|
if [ $MACLIST_DISPOSITION != ACCEPT ]; then
|
|
run_iptables -A $chain -t $MACLIST_TABLE -j $MACLIST_TARGET
|
|
fi
|
|
done
|
|
fi
|
|
}
|
|
|