SHOREWALL-NETMAP(5)						  [FIXME: manual]					       SHOREWALL-NETMAP(5)

NAME

       netmap - Shorewall NETMAP definition file

SYNOPSIS

       /etc/shorewall/netmap

DESCRIPTION

       This file is used to map addresses in one network to corresponding addresses in a second network.

	   Warning
	   To use this file, your kernel and iptables must have NETMAP support included.

       The columns in the file are as follows (where the column name is followed by a different name in parentheses, the different name is used in
       the alternate specification syntax).

       TYPE - {DNAT|SNAT}[:{P|O|T}]
	   Must be DNAT or SNAT; beginning with Shorewall 4.4.23, may be optionally followed by :P, :O or :T to perform stateless NAT. Stateless
	   NAT requires Rawpost Table support in your kernel and iptables (see the output of shorewall show capabilities).

	   If DNAT or DNAT:P, traffic entering INTERFACE and addressed to NET1 has its destination address rewritten to the corresponding address
	   in NET2.

	   If SNAT or SNAT:T, traffic leaving INTERFACE with a source address in NET1 has it's source address rewritten to the corresponding
	   address in NET2.

	   If DNAT:O, traffic originating on the firewall and leaving via INTERFACE and addressed to NET1 has its destination address rewritten to
	   the corresponding address in NET2.

	   If DNAT:P, traffic entering via INTERFACE and addressed to NET1 has its destination address rewritten to the corresponding address in
	   NET2.

	   If SNAT:P, traffic entering via INTERFACE with a destination address in NET1 has it's source address rewritten to the corresponding
	   address in NET2.

	   If SNAT:O, traffic originating on the firewall and leaving via INTERFACE with a source address in NET1 has it's source address
	   rewritten to the corresponding address in NET2.

       NET1 - network-address
	   Network in CIDR format (e.g., 192.168.1.0/24). Beginning with Shorewall 4.4.24, exclusion[1] is supported.

       INTERFACE - interface
	   The name of a network interface. The interface must be defined in shorewall-interfaces[2](5). Shorewall allows loose matches to
	   wildcard entries in shorewall-interfaces[2](5). For example, ppp0 in this file will match a shorewall-interfaces[2](8) entry that
	   defines ppp+.

       NET2 - network-address
	   Network in CIDR format

       NET3 (Optional) - network-address
	   Added in Shorewall 4.4.11. If specified, qualifies INTERFACE. It specifies a SOURCE network for DNAT rules and a DESTINATON network for
	   SNAT rules.

       PROTO - protocol-number-or-name
	   Optional -- added in Shorewall 4.4.23.2. Only packets specifying this protocol will have their IP header modified.

       DEST PORT(S) (dport) - port-number-or-name-list
	   Optional - added in Shorewall 4.4.23.2. Destination Ports. A comma-separated list of Port names (from services(5)), port numbers or
	   port ranges; if the protocol is icmp, this column is interpreted as the destination icmp-type(s). ICMP types may be specified as a
	   numeric type, a numberic type and code separated by a slash (e.g., 3/4), or a typename. See
	   http://www.shorewall.net/configuration_file_basics.htm#ICMP.

	   If the protocol is ipp2p, this column is interpreted as an ipp2p option without the leading "--" (example bit for bit-torrent). If no
	   PORT is given, ipp2p is assumed.

	   An entry in this field requires that the PROTO column specify icmp (1), tcp (6), udp (17), sctp (132) or udplite (136). Use '-' if any
	   of the following field is supplied.

       SOURCE PORT(S) (sport) - port-number-or-name-list
	   Optional -- added in Shorewall 4.4.23.2. Source port(s). If omitted, any source port is acceptable. Specified as a comma-separated list
	   of port names, port numbers or port ranges.

	   An entry in this field requires that the PROTO column specify tcp (6), udp (17), sctp (132) or udplite (136). Use '-' if any of the
	   following fields is supplied.

FILES

       /etc/shorewall/netmap

SEE ALSO

       http://shorewall.net/netmap.html

       http://shorewall.net/configuration_file_basics.htm#Pairs

       shorewall(8), shorewall-accounting(5), shorewall-actions(5), shorewall-blacklist(5), shorewall-hosts(5), shorewall_interfaces(5),
       shorewall-ipsets(5), shorewall-maclist(5), shorewall-masq(5), shorewall-nat(5), shorewall-params(5), shorewall-policy(5),
       shorewall-providers(5), shorewall-proxyarp(5), shorewall-rtrules(5), shorewall-routestopped(5), shorewall-rules(5), shorewall.conf(5),
       shorewall-secmarks(5), shorewall-tcclasses(5), shorewall-tcdevices(5), shorewall-tcrules(5), shorewall-tos(5), shorewall-tunnels(5),
       shorewall-zones(5)

NOTES

	1. exclusion
	   http://www.shorewall.net/manpages/shorewall-exclusion.html

	2. shorewall-interfaces
	   http://www.shorewall.net/manpages/shorewall-interfaces.html

[FIXME: source] 						    06/28/2012						       SHOREWALL-NETMAP(5)