Does NAT occur before or after routing?
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?
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