Does NAT occur before or after routing?

[dellpe]

I got one problem, If my broader enable nat, I wonder if routing occur before nat ? if someone know about this, can you tell me?

[jimp]

Outbound NAT happens as the traffic exits an interface. Routing decisions happen before that point.

To oversimplify it a bit:

• Packet enters firewall
• Routing table (or policy routing) decides which interface the packet will exit
• Outbound (source) NAT applies as the traffic leaves that interface