shorewall_code/Samples/two-interfaces/rules

#
# Shorewall version 1.2 - Rules File
#
# /etc/shorewall/rules 
#
#	Rules in this file govern connection establishment. Requests and
#	responses are automatically allowed using connection tracking.
#
# Columns are:
#
#
#	RESULT		ACCEPT, DROP or REJECT
#
#				ACCEPT -- allow the connection request
#				DROP   -- ignore the request
#				REJECT -- disallow the request and return an
#					  icmp-unreachable packet.
#
#			The line may NOT start with $<variable-name>
#
#			May optionally be followed by ":" and a syslog log
#			level (e.g, REJECT:info). This causes the packet to be
#			logged at the specified level.
#
#	CLIENT(S)	Hosts permitted to be clients. May be a zone defined
#			in /etc/shorewall/zones or "fw" to indicate the
#			firewall itself.
#
#			Clients may be further restricted to a particular
#			subnet or host by appending ":" and the subnet or host.
#
#			dmz:192.168.2.2		Host 192.168.2.2 in the DMZ
#			net:155.186.235.0/24	Subnet 155.186.235.0/24 on the
#						Internet
#
#			Alternatively, clients may be specified by interface
#			by appending ":" followed by the interface name. For
#			example, loc:eth1 specifies a client that
#			communicates with the firewall system through eth1.
#
#	SERVER		Location of Server. May be a zone defined in
#			/etc/shorewall/zones or "fw" to indicate the firewall
#			itself.
#
#			The server may be further restricted to a particular
#			subnet, host or interface by appending ":" and the
#			subnet, host or interface. See above.
#
#			The port that the server is listening on may be
#			included and separated from the server's IP address by
#			":". If omitted, the firewall will not modifiy the
#			destination port.
#
#			Example: loc:192.168.1.3:8080 specifies a local
#			server at IP address 192.168.1.3 and listening on port
#			8080. The port number MUST be specified as an integer
#			and not as a name from /etc/services.
#
#	PROTO		Protocol - Must be "tcp", "udp", "icmp", a number,
#			"all" or "related". If "related", the remainder of the
#			entry must be omitted and connection requests that are
#			related to existing requests will be accepted.
#
#	PORT(S)		Destination Port. A comma-separated list of Port names
#			(from /etc/services), port numbers or port ranges;
#			if the protocol is "icmp", this column is interpreted as
#			the destination icmp-type. If this column contains the
#			value "none", the rule is ignored.
#
#			This column is ignored if PROTOCOL = all but must be
#			entered if any of the following fields are supplied.
#			In that case, it is suggested that this field contain
#			 "-"
#
#	CLIENT PORT(S)	(Optional) Port(s) used by the client. If omitted,
#			any source port is acceptable.
#
#			If you don't want to restrict client ports but need to
#			specify an ADDRESS in the next column, then place "-"
#			in this column.
#
#	ADDRESS		(0ptional) If included and different from the IP
#			address given in the SERVER column, this is an address
#			on some interface on the firewall and connections to
#			that address will be forwarded to the IP and port
#			specified in the SERVER column.
#
#			If the special value "all" is used, then requests from
#			the client zone given in the CLIENT(s) column with the
#			destination port given in PORT(s) will be forwarded to
#			the IP address given in SERVER.
#
#			The address (or "all") may optionally be followed by
#			a colon (":") an an IP address. This causes Shorewall
#			to use the specified IP address as the source address
#			in forwarded packets. See the Shorewall documentation
#			for restrictions concerning this feature. If no source
#			IP address is given, the original source address is not
#			altered.
#
#	Example: Forward all ssh and www connection requests from the internet to
#		 local system 192.168.1.3
#
#	#RESULT CLIENTS	SERVER(S)	  PROTO	PORT(S)	CLIENT PORT(S) ADDRESS
#	ACCEPT	net	loc:192.168.1.3 tcp	ssh,www	-	       all
#
#	Example: Redirect all locally-originating www connection requests to
#		 port 8080 on the firewall (Squid running on the firewall
#		 system)
#
#	#RESULT CLIENTS	SERVER(S) PROTO	PORTS(S) CLIENT PORT(S)	ADDRESS
#	ACCEPT	loc	fw::8080  tcp	www	 -		all
##############################################################################
#RESULT		CLIENT(S) SERVER(S)	PROTO	PORT(S)	CLIENT PORT(S) ADDRESS
#
#
# To avoid connection delays, reject AUTH if the user hasn't ACCEPTED it above
#
REJECT		net	  fw		tcp	113
#
# Accept DNS connections from the firewall to the network
#
ACCEPT		fw	  net		tcp	53
ACCEPT		net	  net		udp	53
#
# Accept SSH connections from the local network for administration
#
ACCEPT		loc	  net		tcp	22
#
# Make ping work
#
ACCEPT		fw	  loc		icmp	8
ACCEPT		loc	  fw		icmp	8
ACCEPT		fw	  net		icmp	8

#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE