Elastic Network Interface (ENI)

  • It is a logical networking component in a VPC that represents a virtual network card.

  • It can include the following attributes:

    • A primary private IPv4 address from the IPv4 address range of your VPC

    • One or more secondary private IPv4 addresses from the IPv4 address range of your VPC

    • One Elastic IP address (IPv4) per private IPv4 address

    • One public IPv4 address

    • One or more IPv6 addresses

    • One or more security groups

    • A MAC address

    • A source/destination check flag

    • A description

  • You can create and configure network interfaces in your account and attach them to instances.

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