What are the key differences between SNAT and DNAT in network address translation?

Example Concept: SNAT is commonly used to allow devices within a private network to access external networks by translating their private IP addresses to a public IP address. This is often implemented in routers or firewalls for outbound internet access. DNAT is used to redirect incoming traffic destined for a public IP address to a private IP address within a local network, enabling services like web servers to be accessible from the internet. Both SNAT and DNAT are crucial for managing IP address spaces and ensuring secure and efficient traffic flow in network environments.