Network address translation: an NSX gateway swaps the source (SNAT) or destination (DNAT) address on passing packets, letting, say, privately addressed VMs reach outside networks.
Also called network address translation.
Read more: Broadcom TechDocs
In the Ultra Transcenders books
2V0-17.25SC-900AZ-802MD-102ALZ
Each book explains NAT in context, with comparison tables and the common traps.
Terms in this definition
- NSX
Software that handles networking and security across VCF, covering firewalling, load balancing, NAT, VPCs, overlay segments and Tier-0/1 gateways.
- SNAT
Translating the source address of a flow. Azure Firewall does this automatically to its public IP for outbound internet traffic, and NAT gateway supplies SNAT ports for outbound connections.
- DNAT
Destination NAT. Inbound packets get a new target address, letting an outside IP map to a workload inside. On NSX this requires an active-standby gateway.
- Virtual machines
Infrastructure-as-a-service compute giving complete control of the operating system, making it a fit for lift-and-shift moves and for software relying on OS-level pieces like COM.