SNAT (Source Network Address Translation) and DNAT (Destination Network Address Translation) are two types of NAT used to modify IP addresses in packet headers for different purposes. SNAT is primarily used to change the source IP address of outgoing packets, often for outbound traffic from a private network to the internet. DNAT, on the other hand, modifies the destination IP address of incoming packets, typically to redirect traffic to a specific internal server.

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