Provided by: shorewall_4.4.26.1-1_all bug

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-route_rules(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]                   12/13/2011               SHOREWALL-NETMAP(5)