Typically, which network device would be used to perform NAT for a corporate environment?

In a typical corporate environment, a router or a firewall would be used to perform Network Address Translation (NAT).

Here are the steps:

1. The router or firewall is configured to enable NAT. This is usually done by a network administrator.

2. The NAT device is connected to both the internal corporate network and the external internet.

3. When a device on the internal network sends a request to a device on the internet, the NAT device changes the source IP address of the request to its own external IP address. This is known as "source NAT".

4. When the internet device sends a response back, the NAT device changes the destination IP address of the response to the original internal IP address. This is known as "destination NAT".

5. The NAT device keeps a translation table to keep track of which internal IP addresses correspond to which external IP addresses.

6. This process allows multiple devices on the internal network to share a single external IP address, which can help conserve IP address space and improve security.