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 DESTINATION 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 numeric 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] 12/19/2013 SHOREWALL-NETMAP(5)
