SHOREWALL-NETMAP(5) | [FIXME: manual] | SHOREWALL-NETMAP(5) |
NAME¶
netmap - Shorewall NETMAP definition fileSYNOPSIS¶
/etc/shorewall/netmap
DESCRIPTION¶
This file is used to map addresses in one network to corresponding addresses in a second network.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/netmapSEE 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
- 2.
- shorewall-interfaces
06/28/2012 | [FIXME: source] |