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git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@499 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
264 lines
8.8 KiB
Plaintext
Executable File
264 lines
8.8 KiB
Plaintext
Executable File
#
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# Shorewall version 1.4 - Sample Rules File For Three Interfaces
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#
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# /etc/shorewall/rules
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#
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# Rules in this file govern connection establishment. Requests and
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# responses are automatically allowed using connection tracking.
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#
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# In most places where an IP address or subnet is allowed, you
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# can preceed the address/subnet with "!" (e.g., !192.168.1.0/24) to
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# indicate that the rule matches all addresses except the address/subnet
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# given. Notice that no white space is permitted between "!" and the
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# address/subnet.
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#
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# Columns are:
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#
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#
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# ACTION ACCEPT, DROP, REJECT, DNAT, DNAT- or REDIRECT
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#
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# ACCEPT
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# Allow the connection request
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# DROP
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# Ignore the request
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# REJECT
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# Disallow the request and return an
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# icmp-unreachable or an RST packet.
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# DNAT
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# Forward the request to another
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# system (and optionally another
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# port).
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# DNAT-
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# Advanced users only.
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# Like DNAT but only generates the
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# DNAT iptables rule and not
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# the companion ACCEPT rule.
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# REDIRECT
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# Redirect the request to a local
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# port on the firewall.
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# CONTINUE
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# (For experts only). Do Not Process
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# any of the following rules for this
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# (source zone,destination zone). If
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# the source and/or destination IP
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# address falls into a zone defined
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# later in /etc/shorewall/zones, this
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# connection request will be passed
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# to the rules defined for that
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# (those) zones(s).
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#
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# May optionally be followed by ":" and a syslog log
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# level (e.g, REJECT:info). This causes the packet to be
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# logged at the specified level.
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#
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# You may also specify ULOG (must be in upper case) as a
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# log level. This will log to the ULOG target for routing
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# to a separate log through use of ulogd.
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# (http://www.gnumonks.org/projects/ulogd).
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#
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# SOURCE Source hosts to which the rule applies. May be a zone
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# defined in /etc/shorewall/zones, $FW to indicate the
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# firewall itself, or "all" If the ACTION is DNAT or
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# REDIRECT, sub-zones of the specified zone may be
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# excluded from the rule by following the zone name with
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# "!' and a comma-separated list of sub-zone names.
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#
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# Except when "all" is specified, clients may be further
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# restricted to a list of subnets and/or hosts by
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# appending ":" and a comma-separated list of subnets
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# and/or hosts. Hosts may be specified by IP or MAC
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# address; mac addresses must begin with "~" and must use
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# "-" as a separator.
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#
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# Some Examples:
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#
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# net:155.186.235.1
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# Host 155.186.235.1 on the Internet
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#
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# loc:192.168.1.0/24
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# Subnet 192.168.1.0/24 on the
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# Local Network
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#
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# net:155.186.235.1,155.186.235.2
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# Hosts 155.186.235.1 and
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# 155.186.235.2 on the Internet.
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#
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# loc:~00-A0-C9-15-39-78
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# Host on the Local Network with
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# MAC address 00:A0:C9:15:39:78.
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#
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# Alternatively, clients may be specified by interface
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# by appending ":" to the zone name followed by the
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# interface name. For example, net:eth0 specifies a
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# client that communicates with the firewall system
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# through eth0. This may be optionally followed by
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# another colon (":") and an IP/MAC/subnet address
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# as described above (e.g., net:eth0:192.168.1.5).
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#
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# DEST Location of Server. May be a zone defined in
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# /etc/shorewall/zones, $FW to indicate the firewall
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# itself or "all"
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#
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# Except when "all" is specified, the server may be
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# further restricted to a particular subnet, host or
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# interface by appending ":" and the subnet, host or
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# interface. See above.
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#
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# Restrictions:
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#
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# 1. MAC addresses are not allowed.
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# 2. In DNAT rules, only IP addresses are
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# allowed; no FQDNs or subnet addresses
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# are permitted.
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#
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# The port that the server is listening on may be
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# included and separated from the server's IP address by
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# ":". If omitted, the firewall will not modifiy the
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# destination port. A destination port may only be
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# included if the ACTION is DNAT or REDIRECT.
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#
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# Example: net:155.186.235.1:25 specifies a Internet
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# server at IP address 155.186.235.1 and listening on port
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# 25. The port number MUST be specified as an integer
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# and not as a name from /etc/services.
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#
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# If the ACTION is REDIRECT, this column needs only to
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# contain the port number on the firewall that the
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# request should be redirected to.
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#
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# PROTO Protocol - Must be "tcp", "udp", "icmp", a number,
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# "all".
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#
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# DEST PORT(S) Destination Ports. A comma-separated list of Port
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# names (from /etc/services), port numbers or port
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# ranges; if the protocol is "icmp", this column is
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# interpreted as the destination icmp-type(s).
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#
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# A port range is expressed as <low port>:<high port>.
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#
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# This column is ignored if PROTOCOL = all but must be
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# entered if any of the following ields are supplied.
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# In that case, it is suggested that this field contain
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# "-"
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#
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# If MULTIPORT=Yes in /etc/shorewall/shorewall.conf, then
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# only a single Netfilter rule will be generated if in
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# this list and the CLIENT PORT(S) list below:
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# 1. There are 15 or less ports listed.
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# 2. No port ranges are included.
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# Otherwise, a separate rule will be generated for each
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# port.
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#
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# CLIENT PORT(S) (Optional) Port(s) used by the client. If omitted,
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# any source port is acceptable. Specified as a comma-
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# separated list of port names, port numbers or port
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# ranges.
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#
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# If you don't want to restrict client ports but need to
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# specify an ADDRESS in the next column, then place "-"
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# in this column.
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#
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# If MULTIPORT=Yes in /etc/shorewall/shorewall.conf, then
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# only a single Netfilter rule will be generated if in
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# this list and the DEST PORT(S) list above:
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# 1. There are 15 or less ports listed.
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# 2. No port ranges are included.
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# Otherwise, a separate rule will be generated for each
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# port.
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#
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# ORIGINAL DEST (0ptional -- only allowed if ACTION is DNAT or
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# REDIRECT) If included and different from the IP
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# address given in the SERVER column, this is an address
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# on some interface on the firewall and connections to
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# that address will be forwarded to the IP and port
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# specified in the DEST column.
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#
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# The address may optionally be followed by
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# a colon (":") and a second IP address. This causes
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# Shorewall to use the second IP address as the source
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# address in forwarded packets. See the Shorewall
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# documentation for restrictions concerning this feature.
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# If no source IP address is given, the original source
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# address is not altered.
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#
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# Also by default all outbound loc -> net communications are allowed.
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# You can change this behavior in the sample policy file.
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#
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# Example: Accept www requests to the firewall.
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#
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# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL
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# # PORT PORT(S) DEST
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# ACCEPT net fw tcp http
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#
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# Example: Accept SMTP requests from the Local Network to the Internet
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#
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# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL
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# # PORT PORT(S) DEST
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# ACCEPT loc net tcp smtp
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#
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# Example: Forward all ssh and http connection requests from the Internet
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# to dmz system 192.168.2.3
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#
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# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL
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# # PORT PORT(S) DEST
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# DNAT net dmz:192.168.2.3 tcp ssh,http
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#
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# Example: Redirect all locally-originating www connection requests to
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# port 3128 on the firewall (Squid running on the firewall
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# system) except when the destination address is 192.168.2.2
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#
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# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL
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# # PORT PORT(S) DEST
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# REDIRECT loc 3128 tcp www - !192.168.2.2
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#
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# Example: All http requests from the Internet to address
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# 130.252.100.69 are to be forwarded to 192.168.1.3
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#
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# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL
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# # PORT PORT(S) DEST
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# DNAT net loc:192.168.1.3 tcp 80 - 130.252.100.69
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##############################################################################
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#ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL
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# PORT PORT(S) DEST
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#
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# Accept DNS connections from the firewall to the network
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#
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ACCEPT fw net tcp 53
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ACCEPT fw net udp 53
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#
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# Accept SSH connections from the local network for administration.
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#
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ACCEPT loc fw tcp 22
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#
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##############################################################################
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#ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL
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# PORT PORT(S) DEST
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#
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# Accept outgoing DNS connections from the firewall
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#
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ACCEPT fw net tcp 53
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ACCEPT fw net udp 53
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#
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# Accept SSH connections from the local network to the firewall and DMZ
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#
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ACCEPT loc fw tcp 22
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ACCEPT loc dmz tcp 22
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#
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# DMZ DNS access to the internet
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#
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ACCEPT dmz net tcp 53
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ACCEPT dmz net udp 53
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#
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# Make ping work between the DMZ, net and local zone (assumes that the loc->
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# net policy is ACCEPT).
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#
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ACCEPT net fw icmp 8
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ACCEPT loc fw icmp 8
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ACCEPT dmz fw icmp 8
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ACCEPT loc dmz icmp 8
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ACCEPT dmz loc icmp 8
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ACCEPT dmz net icmp 8
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ACCEPT net dmz icmp 8 # Only with Proxy ARP and
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ACCEPT net loc icmp 8 # static NAT
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#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE
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