How to put VPC attachment of core network into appliance mode when using AWS Cloud WAN

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About AWS CloudWAN. I cannot figure out how to put VPC attachment of core network into appliance mode. If i want to do inspection for either ingress or east-west traffic, i would need that to make traffic symmetric.

Target Architecture

Icon is transit gateway but for this discussion, it should be considered as Core Network Edge with transit gateway, i'd set the bottom VPC attachment into Appliance mode. inspection depicted here is AWS network firewall but it's also just to show the question. It might be gwlb with NVA or just NVAs.

profile pictureAWS
feita há 2 anos1499 visualizações
2 Respostas
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Resposta aceita

Hi Fabio,

The TGW Appliance mode is applied to a specific 'Attachment ID'. Using CloudShell (currently this can only be enabled via CLI and not GUI) you can use below command to enable it for the VPC attachment that connects to the Inspection VPC.

Example command:

aws ec2 modify-transit-gateway-vpc-attachment --transit-gateway-attachment-id tgw-attach-xxxxX12345 --options ApplianceModeSupport=enable

Refer: https://docs.aws.amazon.com/cli/latest/reference/ec2/modify-transit-gateway-vpc-attachment.html

Please note: CloudWAN does not natively support Appliance mode (yet)

profile pictureAWS
ESPECIALISTA
respondido há 2 anos
1

Hi Fabio,

You don't need to enable appliance mode on the attachment for the ingress/egress inspection VPC. Appliance mode is intended to be used for the the east/west inspection VPC, to maintain AZ symmetry for both the forward and return traffic flows between two VPCs.

respondido há 10 meses

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