Create Security Groups

Database Security Group

  1. In VPC Console, go to Security Groups → Create security group.

Create SC

  1. Configure:
    • Name: db-migration-sg
    • Description: Security group for database migration
    • VPC: migration-vpc
  2. Add inbound rules:
    • MySQL/Aurora (3306) → Source: 10.0.0.0/16
    • PostgreSQL (5432) → Source: 10.0.0.0/16

Create Database Security Group

  1. Click Create security group.

DMS Security Group

  1. Click Create security group again.
  2. Configure:
    • Name: dms-replication-sg
    • Description: Security group for DMS replication instance
    • VPC: migration-vpc
  3. Inbound rules: leave empty (DMS only needs outbound).
  4. Outbound rules: keep default (All traffic).

Create DMS Security Group

  1. Click Create security group.

Notes

  • Database SG ID: sg-xxxxxxxxx
  • DMS SG ID: sg-xxxxxxxxx