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shorewall_code/Shorewall/action.RST

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#
# Shorewall 4 - RST Action
#
# /usr/share/shorewall/action.RST
#
# This program is under GPL [http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt]
#
# (c) 2012 - 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.
#
# RST[([<action>|-[,{audit|-}])]
#
# Default action is DROP
#
##########################################################################################
?FORMAT 2
DEFAULTS DROP,-
?BEGIN PERL;
use Shorewall::Config;
use Shorewall::Chains;
my ( $action, $audit ) = get_action_params( 2 );
fatal_error "Invalid parameter ($audit) to action RST" if supplied $audit && $audit ne 'audit';
fatal_error "Invalid parameter ($action) to action RST" unless $action =~ /^(?:ACCEPT|DROP)$/;
my $chainref = get_action_chain;
my ( $level, $tag ) = get_action_logging;
my $target = require_audit ( $action , $audit );
log_rule_limit $level, $chainref, 'RST' , $action, '', $tag, 'add', '-p 6 --tcp-flags RST RST ' if $level ne '';
add_jump $chainref , $target, 0, '-p 6 --tcp-flags RST RST ';
allow_optimize( $chainref );
1;
?END PERL;