Which configuration below will allow you the ability to remotely administer your application and database servers, as well as allow these servers to retrieve updates from the Internet?
Create a bastion and NAT instance in subnet-258bc44d, and add a route from rtb- 238bc44b to the NAT instance.
Add a route from rtb-238bc44b to igw-2d8bc445 and add a bastion and NAT instance within subnet-248bc44c.
Create a bastion and NAT instance in subnet-248bc44c, and add a route from rtb- 238bc44b to subnet-258bc44d.
Create a bastion and NAT instance in subnet-258bc44d, add a route from rtb-238bc44b to Igw-2d8bc445, and a new NACL that allows access between subnet-258bc44d and subnet-248bc44c.
Explanations:
This option places the NAT and bastion hosts in the public subnet (subnet-258bc44d) with a route to the internet, allowing controlled access to internal servers and enabling them to retrieve updates from the internet.
Routing rtb-238bc44b to the internet gateway (IGW) would expose the private subnets directly to the internet, violating the security requirement.
Creating the NAT and bastion in subnet-248bc44c (private subnet) would not work since this subnet lacks internet access, making it unable to retrieve updates.
Routing rtb-238bc44b to the IGW would expose the private subnets to the internet, violating the requirement for application and database servers to remain isolated.