Brocade Mobility RFS Controller System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 214)

202 Brocade Mobility RFS Controller System Reference Guide
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Static NAT creates a permanent, one-to-one mapping between an address on an internal
network and a perimeter or external network. To share a Web server on a perimeter interface
with the Internet, use static address translation to map the actual address to a registered IP
address. Static address translation hides the actual address of the server from users on
insecure interfaces. Casual access by unauthorized users becomes much more difficult. Static
NAT requires a dedicated address on the outside network for each host.
16. Select OK to save the changes or overrides made to the static NAT configuration. Select Reset
to revert to the last saved configuration.
17. Select the Dynamic NAT tab.
Dynamic NAT configurations translate the IP address of packets going out from one interface to
another interface based on configured conditions. Dynamic NAT requires packets be switched
through a NAT router to generate translations in the translation table.
Protocol Select the protocol for use with static translation (TCP, UDP and Any are available options). TCP is a
transport layer protocol used by applications requiring guaranteed delivery. It’s a sliding window
protocol handling both time outs and retransmissions. TCP establishes a full duplex virtual
connection between two endpoints. Each endpoint is defined by an IP address and a TCP port
number. The User Datagram Protocol (UDP) offers only a minimal transport service, non-guaranteed
datagram delivery, and provides applications direct access to the datagram service of the IP layer.
UDP is used by applications not requiring the level of service of TCP or are using communications
services (multicast or broadcast delivery) not available from TCP. The default setting is Any.
Destination IP Enter the local address used at the (source) end of the static NAT configuration. This address (once
translated) is not exposed to the outside world when the translation address is used to interact with
the remote destination.
Destination Port Use the spinner control to set the local port number used at the (source) end of the static NAT
configuration. The default value is port 1.
NAT IP Enter the IP address of the matching packet to the specified value. The IP address modified can be
either source or destination based on the direction specified.
NAT Port Enter the port number of the matching packet to the specified value. This option is valid only if the
direction specified is destination.
Network Select Inside or Outside NAT as the network direction. Inside is the default setting.