forked from extern/shorewall_code
74 lines
2.8 KiB
Plaintext
74 lines
2.8 KiB
Plaintext
#
|
|
# Shorewall 4 - Broadcast Action
|
|
#
|
|
# /usr/share/shorewall/action.Broadcast
|
|
#
|
|
# This program is under GPL [http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt]
|
|
#
|
|
# (c) 2011 - 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
#
|
|
# Broadcast[([<action>|-[,{audit|-}])]
|
|
#
|
|
# Default action is DROP
|
|
#
|
|
##########################################################################################
|
|
FORMAT 2
|
|
|
|
DEFAULTS DROP,-
|
|
|
|
BEGIN PERL;
|
|
|
|
use Shorewall::IPAddrs;
|
|
use Shorewall::Config;
|
|
use Shorewall::Chains;
|
|
|
|
my ( $action, $audit ) = get_action_params( 2 );
|
|
|
|
fatal_error "Invalid parameter ($audit) to action Broadcast" if supplied $audit && $audit ne 'audit';
|
|
fatal_error "Invalid parameter ($action) to action Broadcast" unless $action =~ /^(?:ACCEPT|DROP|REJECT)$/;
|
|
|
|
my $chainref = get_action_chain;
|
|
my ( $level, $tag ) = get_action_logging;
|
|
my $target = require_audit ( $action , $audit );
|
|
|
|
if ( have_capability( 'ADDRTYPE' ) ) {
|
|
if ( $level ne '' ) {
|
|
log_rule_limit $level, $chainref, 'dropBcast' , $action, '', $tag, 'add', ' -m addrtype --dst-type BROADCAST ';
|
|
log_rule_limit $level, $chainref, 'dropBcast' , $action, '', $tag, 'add', ' -m addrtype --dst-type MULTICAST ';
|
|
log_rule_limit $level, $chainref, 'dropBcast' , $action, '', $tag, 'add', ' -m addrtype --dst-type ANYCAST ';
|
|
}
|
|
|
|
add_jump $chainref, $target, 0, '-m addrtype --dst-type BROADCAST ';
|
|
add_jump $chainref, $target, 0, '-m addrtype --dst-type MULTICAST ';
|
|
add_jump $chainref, $target, 0, '-m addrtype --dst-type ANYCAST ';
|
|
} else {
|
|
add_commands $chainref, 'for address in $ALL_BCASTS; do';
|
|
incr_cmd_level $chainref;
|
|
log_rule_limit $level, $chainref, 'Broadcast' , $action, '', $tag, 'add', ' -d $address ' if $level ne '';
|
|
add_jump $chainref, $target, 0, "-d \$address ";
|
|
decr_cmd_level $chainref;
|
|
add_commands $chainref, 'done';
|
|
}
|
|
|
|
log_rule_limit $level, $chainref, 'Broadcast' , $action, '', $tag, 'add', ' -d 224.0.0.0/4 ' if $level ne '';
|
|
add_jump $chainref, $target, 0, '-d 224.0.0.0/4 ';
|
|
|
|
1;
|
|
|
|
END PERL;
|