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b66929a65e
1) Elimination of the "shorewall monitor" command. 2) The /etc/shorewall/ipsec and /etc/shorewall/zones file are combined into a single /etc/shorewall/zones file. This is done in an upwardly-compatible way so that current users can continue to use their existing files. 3) Support has been added for the arp_ignore interface option. 4) DROPINVALID has been removed from shorewall.conf. Behavior is as if DROPINVALID=No was specified. 5) The 'nobogons' option and BOGON_LOG_LEVEL are removed. 6) Error and warning messages have been made easier to spot by using capitalization (e.g., ERROR: and WARNING:). 7) The /etc/shorewall/policy file now contains a new connection policy and a policy for ESTABLISHED packets. Useful for users of snort-inline who want to pass all packets to the QUEUE target. 8) A new 'critical' option has been added to /etc/shorewall/routestopped. Shorewall insures communication between the firewall and 'critical' hosts throughout start, restart, stop and clear. Useful for diskless firewall's with NFS-mounted file systems, LDAP servers, Crossbow, etc. 9) Macros. Macros are very similar to actions but are easier to use, allow parameter substitution and are more efficient. Almost all of the standard actions have been converted to macros in the EXPERIMENTAL branch. 10) The default value of ADD_IP_ALIASES in shorewall.conf is changed to No. 11) If you have 'make' installed on your firewall, then when you use the '-f' option to 'shorewall start' (as happens when you reboot), if your /etc/shorewall/ directory contains files that were modified after Shorewall was last restarted then Shorewall is started using the config files rather than using the saved configuration. git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@2409 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
217 lines
7.0 KiB
Plaintext
Executable File
217 lines
7.0 KiB
Plaintext
Executable File
#
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# Shorewall 2.6 - Masquerade file
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#
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# /etc/shorewall/masq
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#
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# Use this file to define dynamic NAT (Masquerading) and to define Source NAT
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# (SNAT).
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#
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# Columns are:
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#
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# INTERFACE -- Outgoing interface. This is usually your internet
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# interface. If ADD_SNAT_ALIASES=Yes in
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# /etc/shorewall/shorewall.conf, you may add ":" and
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# a digit to indicate that you want the alias added with
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# that name (e.g., eth0:0). This will allow the alias to
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# be displayed with ifconfig. THAT IS THE ONLY USE FOR
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# THE ALIAS NAME AND IT MAY NOT APPEAR IN ANY OTHER
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# PLACE IN YOUR SHOREWALL CONFIGURATION.
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#
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# This may be qualified by adding the character
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# ":" followed by a destination host or subnet.
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#
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# If you wish to inhibit the action of ADD_SNAT_ALIASES
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# for this entry then include the ":" but omit the digit:
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#
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# eth0:
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# eth2::192.0.2.32/27
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#
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# Normally Masq/SNAT rules are evaluated after those for
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# one-to-one NAT (/etc/shorewall/nat file). If you want
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# the rule to be applied before one-to-one NAT rules,
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# prefix the interface name with "+":
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#
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# +eth0
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# +eth0:192.0.2.32/27
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# +eth0:2
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#
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# This feature should only be required if you need to
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# insert rules in this file that preempt entries in
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# /etc/shorewall/nat.
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#
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# SUBNET -- Subnet that you wish to masquerade. You can specify this as
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# a subnet or as an interface. If you give the name of an
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# interface, you must have iproute installed and the interface
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# must be up before you start the firewall.
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#
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# In order to exclude a subset of the specified SUBNET, you
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# may append "!" and a comma-separated list of IP addresses
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# and/or subnets that you wish to exclude.
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#
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# Example: eth1!192.168.1.4,192.168.32.0/27
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#
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# In that example traffic from eth1 would be masqueraded unless
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# it came from 192.168.1.4 or 196.168.32.0/27
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#
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# ADDRESS -- (Optional). If you specify an address here, SNAT will be
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# used and this will be the source address. If
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# ADD_SNAT_ALIASES is set to Yes or yes in
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# /etc/shorewall/shorewall.conf then Shorewall
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# will automatically add this address to the
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# INTERFACE named in the first column.
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#
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# You may also specify a range of up to 256
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# IP addresses if you want the SNAT address to
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# be assigned from that range in a round-robin
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# range by connection. The range is specified by
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# <first ip in range>-<last ip in range>.
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#
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# Example: 206.124.146.177-206.124.146.180
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#
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# Finally, you may also specify a comma-separated
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# list of ranges and/or addresses in this column.
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#
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# This column may not contain DNS Names.
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#
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# Normally, Netfilter will attempt to retain
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# the source port number. You may cause
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# netfilter to remap the source port by following
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# an address or range (if any) by ":" and
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# a port range with the format <low port>-
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# <high port>. If this is done, you must
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# specify "tcp" or "udp" in the PROTO column.
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#
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# Examples:
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#
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# 192.0.2.4:5000-6000
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# :4000-5000
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#
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# You can invoke the SAME target using the
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# following in this column:
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#
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# SAME:[nodst:]<address-range>[,<address-range>...]
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#
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# The <address-ranges> may be single addresses.
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#
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# SAME works like SNAT with the exception that the
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# same local IP address is assigned to each connection
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# from a local address to a given remote address. If
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# the 'nodst:' option is included, then the same source
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# address is used for a given internal system regardless
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# of which remote system is involved.
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#
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# If you want to leave this column empty
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# but you need to specify the next column then
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# place a hyphen ("-") here.
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#
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# PROTO -- (Optional) If you wish to restrict this entry to a
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# particular protocol then enter the protocol
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# name (from /etc/protocols) or number here.
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#
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# PORT(S) -- (Optional) If the PROTO column specifies TCP (protocol 6)
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# or UDP (protocol 17) then you may list one
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# or more port numbers (or names from
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# /etc/services) separated by commas or you
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# may list a single port range
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# (<low port>:<high port>).
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#
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# Where a comma-separated list is given, your
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# kernel and iptables must have multiport match
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# support and a maximum of 15 ports may be
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# listed.
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#
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# IPSEC -- (Optional) If you specify a value other than "-" in this
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# column, you must be running kernel 2.6 and
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# your kernel and iptables must include policy
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# match support.
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#
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# Comma-separated list of options from the following.
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# Only packets that will be encrypted via an SA that
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# matches these options will have their source address
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# changed.
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#
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# Yes or yes -- must be the only option listed
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# and matches all outbound traffic that will be
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# encrypted.
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#
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# reqid=<number> where <number> is specified
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# using setkey(8) using the 'unique:<number>
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# option for the SPD level.
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#
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# spi=<number> where <number> is the SPI of
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# the SA.
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#
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# proto=ah|esp|ipcomp
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#
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# mode=transport|tunnel
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#
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# tunnel-src=<address>[/<mask>] (only
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# available with mode=tunnel)
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#
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# tunnel-dst=<address>[/<mask>] (only
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# available with mode=tunnel)
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#
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# strict Means that packets must match all
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# rules.
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#
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# next Separates rules; can only be used
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# with strict..
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#
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# Example 1:
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#
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# You have a simple masquerading setup where eth0 connects to
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# a DSL or cable modem and eth1 connects to your local network
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# with subnet 192.168.0.0/24.
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#
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# Your entry in the file can be either:
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#
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# eth0 eth1
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#
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# or
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#
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# eth0 192.168.0.0/24
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#
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# Example 2:
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#
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# You add a router to your local network to connect subnet
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# 192.168.1.0/24 which you also want to masquerade. You then
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# add a second entry for eth0 to this file:
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#
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# eth0 192.168.1.0/24
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#
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# Example 3:
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#
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# You have an IPSEC tunnel through ipsec0 and you want to
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# masquerade packets coming from 192.168.1.0/24 but only if
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# these packets are destined for hosts in 10.1.1.0/24:
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#
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# ipsec0:10.1.1.0/24 196.168.1.0/24
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#
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# Example 4:
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#
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# You want all outgoing traffic from 192.168.1.0/24 through
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# eth0 to use source address 206.124.146.176 which is NOT the
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# primary address of eth0. You want 206.124.146.176 added to
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# be added to eth0 with name eth0:0.
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#
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# eth0:0 192.168.1.0/24 206.124.146.176
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#
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# Example 5:
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#
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# You want all outgoing SMTP traffic entering the firewall
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# on eth1 to be sent from eth0 with source IP address
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# 206.124.146.177. You want all other outgoing traffic
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# from eth1 to be sent from eth0 with source IP address
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# 206.124.146.176.
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#
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# eth0 eth1 206.124.146.177 tcp smtp
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# eth0 eth1 206.124.146.176
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#
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# THE ORDER OF THE ABOVE TWO RULES IS SIGNIFICANT!!!!!
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#
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# For additional information, see http://shorewall.net/Documentation.htm#Masq
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#
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###############################################################################
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#INTERFACE SUBNET ADDRESS PROTO PORT(S) IPSEC
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#LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE
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