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223 lines
8.3 KiB
Plaintext
223 lines
8.3 KiB
Plaintext
#
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# Shorewall 2.4 -- Interfaces File
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#
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# /etc/shorewall/interfaces
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#
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# You must add an entry in this file for each network interface on your
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# firewall system.
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#
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# Columns are:
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#
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# ZONE Zone for this interface. Must match the short name
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# of a zone defined in /etc/shorewall/zones.
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#
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# If the interface serves multiple zones that will be
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# defined in the /etc/shorewall/hosts file, you should
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# place "-" in this column.
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#
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# INTERFACE Name of interface. Each interface may be listed only
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# once in this file. You may NOT specify the name of
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# an alias (e.g., eth0:0) here; see
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# http://www.shorewall.net/FAQ.htm#faq18
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#
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# You may specify wildcards here. For example, if you
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# want to make an entry that applies to all PPP
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# interfaces, use 'ppp+'.
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#
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# There is no need to define the loopback interface (lo)
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# in this file.
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#
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# BROADCAST The broadcast address for the subnetwork to which the
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# interface belongs. For P-T-P interfaces, this
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# column is left blank.If the interface has multiple
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# addresses on multiple subnets then list the broadcast
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# addresses as a comma-separated list.
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#
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# If you use the special value "detect", the firewall
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# will detect the broadcast address for you. If you
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# select this option, the interface must be up before
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# the firewall is started, you must have iproute
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# installed.
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#
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# If you don't want to give a value for this column but
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# you want to enter a value in the OPTIONS column, enter
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# "-" in this column.
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#
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# OPTIONS A comma-separated list of options including the
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# following:
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#
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# dhcp - Specify this option when any of
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# the following are true:
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# 1. the interface gets its IP address
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# via DHCP
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# 2. the interface is used by
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# a DHCP server running on the firewall
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# 3. you have a static IP but are on a LAN
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# segment with lots of Laptop DHCP
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# clients.
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# 4. the interface is a bridge with
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# a DHCP server on one port and DHCP
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# clients on another port.
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#
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# norfc1918 - This interface should not receive
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# any packets whose source is in one
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# of the ranges reserved by RFC 1918
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# (i.e., private or "non-routable"
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# addresses. If packet mangling or
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# connection-tracking match is enabled in
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# your kernel, packets whose destination
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# addresses are reserved by RFC 1918 are
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# also rejected.
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#
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# nobogons - This interface should not receive
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# any packets whose source is in one
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# of the ranges reserved by IANA (this
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# option does not cover those ranges
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# reserved by RFC 1918 -- see above).
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#
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# I PERSONALLY RECOMMEND AGAINST USING
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# THE 'nobogons' OPTION.
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#
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# routefilter - turn on kernel route filtering for this
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# interface (anti-spoofing measure). This
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# option can also be enabled globally in
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# the /etc/shorewall/shorewall.conf file.
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#
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# logmartians - turn on kernel martian logging (logging
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# of packets with impossible source
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# addresses. It is suggested that if you
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# set routefilter on an interface that
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# you also set logmartians. This option
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# may also be enabled globally in the
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# /etc/shorewall/shorewall.conf file.
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#
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# blacklist - Check packets arriving on this interface
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# against the /etc/shorewall/blacklist
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# file.
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#
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# maclist - Connection requests from this interface
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# are compared against the contents of
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# /etc/shorewall/maclist. If this option
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# is specified, the interface must be
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# an ethernet NIC and must be up before
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# Shorewall is started.
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#
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# tcpflags - Packets arriving on this interface are
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# checked for certain illegal combinations
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# of TCP flags. Packets found to have
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# such a combination of flags are handled
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# according to the setting of
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# TCP_FLAGS_DISPOSITION after having been
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# logged according to the setting of
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# TCP_FLAGS_LOG_LEVEL.
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#
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# proxyarp -
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# Sets
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# /proc/sys/net/ipv4/conf/<interface>/proxy_arp.
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# Do NOT use this option if you are
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# employing Proxy ARP through entries in
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# /etc/shorewall/proxyarp. This option is
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# intended soley for use with Proxy ARP
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# sub-networking as described at:
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# http://www.tldp.org/HOWTO/mini/Proxy-ARP-Subnet
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#
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# newnotsyn - TCP packets that don't have the SYN
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# flag set and which are not part of an
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# established connection will be accepted
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# from this interface, even if
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# NEWNOTSYN=No has been specified in
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# /etc/shorewall/shorewall.conf. In other
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# words, packets coming in on this interface
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# are processed as if NEWNOTSYN=Yes had been
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# specified in /etc/shorewall/shorewall.conf.
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#
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# This option has no effect if
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# NEWNOTSYN=Yes.
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#
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# It is the opinion of the author that
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# NEWNOTSYN=No creates more problems than
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# it solves and I recommend against using
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# that setting in shorewall.conf (hence
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# making the use of the 'newnotsyn'
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# interface option unnecessary).
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#
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# routeback - If specified, indicates that Shorewall
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# should include rules that allow filtering
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# traffic arriving on this interface back
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# out that same interface.
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#
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# arp_filter - If specified, this interface will only
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# respond to ARP who-has requests for IP
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# addresses configured on the interface.
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# If not specified, the interface can
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# respond to ARP who-has requests for
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# IP addresses on any of the firewall's
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# interface. The interface must be up
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# when Shorewall is started.
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#
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# nosmurfs - Filter packets for smurfs
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# (packets with a broadcast
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# address as the source).
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#
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# Smurfs will be optionally logged based
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# on the setting of SMURF_LOG_LEVEL in
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# shorewall.conf. After logging, the
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# packets are dropped.
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#
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# detectnets - Automatically taylors the zone named
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# in the ZONE column to include only those
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# hosts routed through the interface.
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#
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# upnp - Incoming requests from this interface may
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# be remapped via UPNP (upnpd).
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#
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# default - This interface is one of two or more on the
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# the firewall that have a default route.
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# You should specify 'default' on all such
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# interfaces, the interfaces should be up when
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# Shorewall starts and each interface must have
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# a default route configured in the main routing
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# table. There are many restrictions on the use
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# of this feature; see
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# http://shorewall.net/Shorewall_and_Routing.html
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# for details.
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#
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# WARNING: DO NOT SET THE detectnets OPTION ON YOUR
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# INTERNET INTERFACE.
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#
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# The order in which you list the options is not
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# significant but the list should have no embedded white
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# space.
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#
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# Example 1: Suppose you have eth0 connected to a DSL modem and
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# eth1 connected to your local network and that your
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# local subnet is 192.168.1.0/24. The interface gets
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# it's IP address via DHCP from subnet
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# 206.191.149.192/27. You have a DMZ with subnet
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# 192.168.2.0/24 using eth2.
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#
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# Your entries for this setup would look like:
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#
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# net eth0 206.191.149.223 dhcp
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# local eth1 192.168.1.255
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# dmz eth2 192.168.2.255
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#
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# Example 2: The same configuration without specifying broadcast
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# addresses is:
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#
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# net eth0 detect dhcp
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# loc eth1 detect
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# dmz eth2 detect
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#
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# Example 3: You have a simple dial-in system with no ethernet
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# connections.
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#
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# net ppp0 -
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#
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# For additional information, see http://shorewall.net/Documentation.htm#Interfaces
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#
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##############################################################################
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#ZONE INTERFACE BROADCAST OPTIONS
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#
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#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE
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