Brocade Virtual ADX Security Guide (Supporting ADX v03.1.00) - Manual (Page 71)

Brocade Virtual ADX Security Guide 59
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Chapter
4
Network Address Translation
Introduction
Network Address Translation (NAT) translates one IP address into another. For example, it
translates an internal private IP address (nonregistered) into an external unique IP address
(registered) used on the Internet.
FIGURE 2 Mapping an internal address to an external address
NAT also provides a more graceful renumbering strategy for organizations changing service
providers or voluntarily renumbering into Classless Interdomain Routing (CIDR) blocks.
The standard NAT support described in this section provides translation for hosts attached to
private networks on the Brocade Virtual ADX, and is separate from the virtual IP address features
provided for Server Load Balancing (SLB). For example, standard NAT is not related to source IP
addresses used for multinetting the Brocade Virtual ADX, performing health checks on remote
servers, and so on.