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shorewall_code/Samples/three-interfaces/rules

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#
# 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"
#
# For additional information, see http://shorewall.net/Documentation.htm#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
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE