natutil(8) BSD System Manager's Manual natutil(8)NAMEnatutil — Query and configure supported Network Address Translation (NAT)
devices
SYNOPSISnatutil [-vx] [-a auth] [-n name] {-1 | -d | -m | -s | -i | -L}
natutil [-vx] [-a auth] [-n name] {-t | -u} {-T | -U} -p ports
DESCRIPTIONnatutil uses the ACP protocol to detect, configure, and extract status
information from Internet gateway devices (IGDs) (such as AirPort Base
Stations) on the local network. Since most IGDs provide Network Address
Translation (NAT) service, they are often interchangably referred to as
"NAT devices" or simply "NATs".
The first synopsis line (with the exception of -L) returns various infor‐
mation from NAT devices.
The second invocation modifies settings on the device. After modifying
settings, AirPort Base Stations must be rebooted for the changes to take
effect. ( servermgrd(8) also reboots the AirPort Base Station when it
modifies port mappings.)
OPTIONS
The following options / commands are available:
-1 Only return data if the IGD found is also our current gateway.
[AirPort only] Will only return if this base station can be
autoconfigured
-a auth [AirPort only] The authentication string to use when communicat‐
ing with a device protected with a password other than the
default "public". Used mostly for scripted operation. Use -i to
get the authentication string interactively.
-i Get the authentication string interactively. This preferred over
-a for security reasons.
-d Reports the IGDs (Internet Gateway Devices) that were found dur‐
ing the discovery.
-m Retrieves the port mapping table from the NAT.
-n name The prefix of the targeted NAT device's name (useful in a LAN
with multiple NAT devices).
-p ports
A comma-separated list of the ports to tap or untap. Must be
used with -t or -u.
-s Retrieves the WAN & LAN status and configuration from the IGD.
-t Configures the NAT to forward the given ports to this machine.
Requires -p and either -T or -U.
-u Removes the given ports from the NAT's port forwarding rules.
Requires -p and either -T or -U.
-v Verbose output. Provides progress and status information on
standard output.
-x XML output. This option provides the most information.
-L [AirPort only] Convert existing DHCP lease into a static reser‐
vation so the host will receive the same IP address after each
reboot.
-T Ports will be tapped / untapped for the TCP protocol. Must be
used with -t or -u.
-U Ports will be tapped / untapped for the UDP protocol. Must be
used with -t or -u.
SEE ALSOifconfig(8), ipconfig(8)Mac OS X Server 10.5 July 23, 2007 Mac OS X Server 10.5
