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JunosE 11.3.x IP Services Configuration Guide
Defining Static Address Translations
Creating Static Inside Source Translations
ip nat inside source static
70
Static address translation establishes a one-to-one mapping between a local and global
address or local and global address/port pair. When you specify a static address
translation or address/port pair translation, you issue commands to indicate how the
translation is applied, along with more specific variables that further define the type of
translation.
CAUTION: You must mark interfaces that participate in NAT translation as
on the inside or the outside network. See "Specifying Inside and Outside
Interfaces" on page 69 for details.
You use the ip nat inside source static command to create static translations from a
local IP address to a global IP address, and to untranslate the destination address when
a packet returns from the outside network to the inside network. When you configure
traditional NAT (both basic NAT and NAPT), you only need to use this command alone.
However, when you configure twice NAT, you must also use "ip nat outside source static"
on page 71 .
The ip nat inside source static command creates a simple (IP address only) or extended
(IP address, port, and protocol) entry in the translation table that maps the two addresses.
Use to create static translations for a source address (or address/port pair) when
routing a packet from the inside network to the outside network, and to untranslate
the destination address (or address/port pair) when a packet returns from the outside
network to the inside network.
A static translation created with the ip nat inside source static command enables any
outside host to contact the inside host by using the inside global address of the inside
host. A static translation can be used by traffic that is initiated in either direction
Example 1—Simple address translation
host (config) # ip nat inside source static 10.1.2.3 171.69.68.10
Example 2—Extended address/port translation
host (config) # ip nat inside source static tcp 10.1.2.3 15 171.69.68.10 30
Use the no version to remove the static translation and purge the associated translations
from the translation table.
See ip nat inside source static.
Copyright © 2010, Juniper Networks, Inc.
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