"Both snat and dnat are processes used to route data across the internet. Snat, also known as Source Network Address Translation, allows traffic from a private network to access the internet. Dnat, which stands for Destination Network Address Translation, masks or changes the destination IP address of a data transmission packet and does the same for any responses from the destination to the original node. Routers located between the endpoints perform these changes. The difference is that snat is associated with outbound communications for the Internet, whereas dnat involves inbound communications to private networks. Multiple nodes accessing an internet resource can use the same snat. However, common Internet Resources need to create a specific dnat for each node they are communicating with."