What type of NAT must be created on the Tier-0 or Tier-1 Gateway for a Web VM to initiate communication with public networks?

When a Web VM needs to initiate communication with public networks, the appropriate type of NAT to configure is Source Network Address Translation (SNAT). This is because SNAT operates by modifying the source address of outbound packets from the Web VM to an IP address of the gateway (in this case, the Tier-0 or Tier-1 Gateway).

This allows the outgoing traffic to appear as if it is coming from the gateway's IP address rather than the internal IP address of the Web VM, thus enabling successful communication with external networks. When the public network responds, those responses are sent back to the gateway, which then translates the destination address back to the original Web VM, facilitating two-way communication.

In contrast, other forms of NAT, such as Destination NAT (DNAT), which modifies the destination address for incoming traffic, are not suitable for initiating outbound connections. Reverse NAT is not a standard term in this context and does not correspond to a specific function in general NAT operations. 1:1 NAT refers to mapping one internal IP address to one external IP address and is not necessary in scenarios where the source needs to translate for outbound traffic. Thus, SNAT is specifically designed for scenarios requiring outbound connections from internal networks to public networks, making it the