# # Shorewall 4 - NotSyn Action # # /usr/share/shorewall/action.NotSyn # # 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. # # NotSyn[([<action>])] # # Default action is DROP # ########################################################################################## ?format 2 DEFAULTS DROP,- ?begin perl; use strict; use Shorewall::IPAddrs; use Shorewall::Config; use Shorewall::Chains; use Shorewall::Rules; my ( $action, $audit ) = get_action_params( 2 ); if ( supplied $audit ) { fatal_error "Invalid parameter ($audit) to action NotSyn" if $audit ne 'audit'; $action = "A_$action"; } perl_action_tcp_helper( $action, '-p 6 ! --syn' ); 1; ?end perl;