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AWS Multi-Account Transit Gateway

Created by Bolum Team
Updated: 4/4/2024
423
AWSNetworkingEnterprise
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Connect all your AWS accounts with centralized networking.

This template implements Transit Gateway for multi-account connectivity, with shared services, centralized egress, and network inspection.

What This Template Does

1
Creates Transit Gateway in network hub account
2
Configures attachments for spoke VPCs
3
Implements routing tables for traffic segmentation
4
Sets up centralized NAT for egress
5
Integrates with Network Firewall for inspection
6
Enables flow logs and monitoring

How to Set It Up

1

Deploy hub network

Create the Transit Gateway in your network account.

2

Share with RAM

Use Resource Access Manager to share with other accounts.

3

Attach spoke VPCs

Create attachments from workload VPCs.

4

Configure routing

Set up route tables for traffic flows.

5

Enable monitoring

Configure flow logs and CloudWatch metrics.

Tools Used

AWS Transit GatewayAWS RAMNetwork FirewallTerraform

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