![]() ![]() You can adapt this architecture to meet your own requirements. Bastion host users connect to the bastion host to connect to the Linux instances, as illustrated in the following diagram. Linux instances are in a subnet that is not publicly accessible, and they are set up with a security group that allows SSH access from the security group attached to the underlying EC2 instance running the bastion host. The bastion host runs on an Amazon EC2 instance that is typically in a public subnet of your Amazon VPC. Later in this post, I provide instructions about how to implement and test the solution.Īmazon VPC enables you to launch AWS resources on a virtual private network that you have defined. In this section, I present the architecture of this solution and explain how you can configure the bastion host to record SSH sessions. Recording SSH sessions enables auditing and can help in your efforts to comply with regulatory requirements. ![]() In this blog post, I will show you how to leverage a bastion host to record all SSH sessions established with Linux instances. For example, you can use a bastion host to mitigate the risk of allowing SSH connections from an external network to the Linux instances launched in a private subnet of your Amazon Virtual Private Cloud (VPC). Because of its exposure to potential attack, a bastion host must minimize the chances of penetration. A bastion host is a server whose purpose is to provide access to a private network from an external network, such as the Internet.
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