Static Nat Operating Rules; Configuring Static Nat - HP ProCurve 5300xl Series Management Manual

Configuring Static Network Address Translation (NAT) for Intranet Applications on the 5300xl Switches
table the switch maintains when NAT is configured. Note also that static NAT
operates at the layer 3 level. IP addresses embedded in layers 4 - 7, as is the
case with some applications, are not translated by static NAT.

Static NAT Operating Rules

■ Uses one-to-one IP address mapping. That is, with each "private" device
IP address you configure for static NAT, there must be a corresponding
virtual, "public" IP address.
Allows up to 32 client IP addresses per switch, which requires an equal
■
number of virtual IP address assignments. Note that increasing the
number of NAT mappings can reduce overall NAT performance.
■ Requires routing to be enabled on the switch.

Configuring Static NAT

Syntax:
[no] ip nat static < private-ip > < public-ip >
Configures the switch to map a virtual IP address over the
actual IP address for a device residing in a region of your
network that is hidden from general network users.
< private-ip > : This is the IP address of a device in a region of
your network that you want to remain hidden from general
network users. (This address is the actual IP address
configured on the device.)
< public-ip > : This is the virtual IP address you want to use
to access (from the public region of the network) a specific
device residing in the hidden portion of the network.
With NAT configured, the switch intercepts the traffic
requesting the < public-ip > address and redirects it to the
corresponding < private-ip > address. In this case, the switch
translates the destination ip address to the < private-ip >
address and then forwards the traffic normally. In the
opposite direction, the switch intercepts the traffic from a
configured < private-ip > address destined to the public network
and translates the < private-ip > address to its corresponding
< public-ip > address before forwarding the traffic.
You can configure up to 32 IP NAT static mappings on the
switch, which means you can map the configured IP
addresses of 32 devices to corresponding virtual IP addresses.
The [no] form of the command removes the specified static
NAT assignment from the switch's running configuration.
IP Routing Features
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