# # Shorewall version 4.0 - Sample Rules File for three-interface configuration. # Copyright (C) 2006,2007 by the Shorewall Team # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2.1 of the License, or (at your option) any later version. # # See the file README.txt for further details. #------------------------------------------------------------------------------------------------------------ # For information about entries in this file, type "man shorewall-rules" ############################################################################################################# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/ MARK # PORT PORT(S) DEST LIMIT GROUP # # Accept DNS connections from the firewall to the Internet # DNS(ACCEPT) $FW net # # # Accept SSH connections from the local network to the firewall and DMZ # SSH(ACCEPT) loc $FW SSH(ACCEPT) loc dmz # # DMZ DNS access to the Internet # DNS(ACCEPT) dmz net # Drop Ping from the "bad" net zone. Ping(DROP) net $FW # # Make ping work bi-directionally between the dmz, net, Firewall and local zone # (assumes that the loc-> net policy is ACCEPT). # Ping(ACCEPT) loc $FW Ping(ACCEPT) dmz $FW Ping(ACCEPT) loc dmz Ping(ACCEPT) dmz loc Ping(ACCEPT) dmz net ACCEPT $FW net icmp ACCEPT $FW loc icmp ACCEPT $FW dmz icmp # Uncomment this if using Proxy ARP and static NAT and you want to allow ping from # the net zone to the dmz and loc #Ping(ACCEPT) net dmz #Ping(ACCEPT) net loc