I have an issue regarding to AWS VPC networking, I want to access external API from my ECS task, I’ve configured ECS in a Private subnet and the only way to access this ECS is trough an load balancer, in some services like Lambda is working (I can access external resources) but in ECS I can’t access to them, I tried modifying the security group rules + modify ACL rules but isn’t working, If anyone know how I can do, I be very grateful, thanks.
ps: I created the VPC on the UI that AWS has.
>Solution :
For resources in a private subnet to access the Internet, the only option is to send that traffic through a NAT Gateway.
You will have to create an AWS NAT Gateway in at least one of the public subnets of your VPC, and then add a route in each of the private subnets to that NAT Gateway.