forked from extern/shorewall_code
2322635ac4
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@1746 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
319 lines
11 KiB
Plaintext
Executable File
319 lines
11 KiB
Plaintext
Executable File
#
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# Shorewall version 2.2 - Sample Rules File For One Interface
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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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# For any particular (source,dest) pair of zones, the rules are evaluated
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# in the order in which they appear in this file and the first match is
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# the one that determines the disposition of the request.
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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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# WARNING: If you masquerade or use SNAT from a local system to the internet
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# you cannot use a ACCEPT rule to allow traffic from the internet to
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# that system. You *must* use a DNAT rule instead.
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# Columns are:
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#
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#
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# ACTION ACCEPT, DROP, REJECT, DNAT, DNAT-, REDIRECT,
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# REDIRECT-, CONTINUE, LOG, QUEUE or an <action>.
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#
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# ACCEPT
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# Allow the connection request
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# ACCEPT+
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# Like ACCEPT but also excludes the
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# connection from any subsequent
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# DNAT[-] or REDIRECT[-] rules
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# NONAT
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# Excludes the connection from any
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# subsequent DNAT[-] or REDIRECT[-]
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# rules but doesn't generate a rule
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# to accept the traffic.
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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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# REDIRECT-
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# Advanced users only.
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# Like REDIRECT but only generates the
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# REDIRECT iptables rule and not the
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# companion ACCEPT rule.
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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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# LOG
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# Simply log the packet and continue.
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# QUEUE
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# Queue the packet to a user-space
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# application such as ftwall.
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# (http://p2pwall.sf.net).
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# <action>
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# The name of an action defined in
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# /etc/shorewall/actions or in
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# /usr/share/shorewall/actions.std.
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#
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# The ACTION may optionally be followed by ":" and a syslog
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# log level (e.g, REJECT:info or DNAT:debug). This causes the
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# packet to be logged at the specified level.
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#
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# If the ACTION names an action defined in
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# /etc/shorewall/actions or in
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# /usr/share/shorewall/actions.std then:
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#
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# - If the log level is followed by "!' then all rules
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# in the action are logged at the log level.
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#
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# - If the log level is not followed by "!" then only
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# those rules in the action that do not specify
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# logging are logged at the specified level.
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#
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# - The special log level 'none!' suppresses logging
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# by the action.
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#
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# You may also specify ULOG (Must be in upper case) as a log
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# level. This will log to the ULOG target for routing to a
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# seperate log through the use of ulogd.
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# (http://www.gnumonks.org/projects/ulogd).
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#
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# Actions specifying logging may be followed by a
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# log tag (a string of alphanumeric characters)
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# are appended to the string generated by the
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# LOGPREFIX (in /etc/shorewall/shorewall.conf).
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#
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# Example: ACCEPT:info:ftp would include 'ftp '
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# at the end of the log prefix generated by the
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# LOGPREFIX setting.
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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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# When "all" is used either in the SOURCE or DEST column
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# intra-zone traffic is not affected. You must add
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# separate rules to handle that traffic.
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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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# net:155.186.235.0/24
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# Subnet 155.186.235.0/24 on the
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# Internet
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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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# net:~00-A0-C9-15-39-78
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# Host on the Internet with
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# MAC address 00:A0:C9:15:39:78.
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#
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# net:192.0.2.11-192.0.2.17
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# Hosts 192.0.2.11-192.0.2.17 in
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# the net zone.
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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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# When "all" is used either in the SOURCE or DEST column
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# intra-zone traffic is not affected. You must add
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# separate rules to handle that traffic.
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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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# 3. You may not specify both an interface and
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# an address
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#
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# Unlike in the SOURCE column, you may specify a range of
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# up to 256 IP addresses using the syntax
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# <first ip>-<last ip>. When the ACTION is DNAT or DNAT-,
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# the connections will be assigned to addresses in the
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# range in a round-robin fashion.
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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", "ipp2p",
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# a number, or "all". "ipp2p" requires ipp2p match
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# support in your kernel and iptables.
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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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# If the protocol is ipp2p, this column is interpreted
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# as an ipp2p option without the leading "--" (example "bit"
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# for bit-torrent). If no port is given, "ipp2p" is
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# assumed.
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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 fields 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 your kernel contains multi-port match support, 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 ORIGINAL DEST in the next column, then place
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# "-" in this column.
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#
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# If your kernel contains multiport match support, 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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# A comma-separated list of addresses may also be used.
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# This is usually most useful with the REDIRECT target
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# where you want to redirect traffic destined for
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# a particular set of hosts.
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#
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# Finally, if the list of addresses begins with "!" then
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# the rule will be followed only if the original
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# destination address in the connection request does not
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# match any of the addresses listed.
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#
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# RATE LIMIT You may rate-limit the rule by placing a value in this column:
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#
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# <rate>/<interval>[:<burst>]
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#
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# Where <rate> is the number of connections per <interval> ("sec"
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# or "min") and <burst> is the largest burst permitted. If no
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# <burst> is given, a value of 5 is assummed. There may be no
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# whitespace embedded in the specification.
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#
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# Example:
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# 10/sec:20
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#
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# If you place a rate limit in this column, you may not place
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# a similiar limit in the ACTION column.
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#
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# USER/GROUP
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# This column may only be non-empty if the SOURCE is the firewall itself.
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#
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# This column may contain:
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#
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# [!][<user name or number>][:<group name or number>]
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#
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# When this column is non-empty, the rule applies only if the program
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# generating the output is running under the effective <user> and/or
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# <group> specified (or is NOT running under that id if "!' is given).
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#
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# Examples:
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# joe # program must be run by joe
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# :kids # program must be run by a member of the 'kids' group.
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# !:kids # program must not be run by a member of the 'kids' group.
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#
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# Note: Most one interface rules are of the type ACCEPT, REDIRECT or REJECT.
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# DNAT, DNAT-, CONTINUE rules are for multiple interface firewall.
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# Also by default all outbound fw -> net communications are allowed.
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# (One Interface Only) You can change this behavior in the sample policy file.
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#
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# Example: Accept www requests to the one interface server.
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#
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# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/
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# # PORT PORT(S) DEST LIMIT GROUP
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# ACCEPT net fw tcp http
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#
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# Example: Redirect port 88 Internet traffic to fw port 80
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# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/
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# # PORT PORT(S) DEST LIMIT GROUP
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# REDIRECT net 80 tcp 88
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#
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##############################################################################
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#ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/
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# PORT PORT(S) DEST LIMIT GROUP
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ACCEPT net fw icmp 8
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ACCEPT fw net icmp
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#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE
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