![]() ![]() Thus, it just needs to establish an outbound connection to the systems manager endpoints. The machine you want to connect to opens the connection (through the Systems Manager API). Systems manager also allows you to connect to ECS containers since the launch of Amazon ECS Exec.įrom a security perspective, the great thing is that you don’t have to open any inbound ports to make the sessions manager work. AWS Systems Manager – Session ManagerĪn even better option is to use Systems Manager to connect to the instances. In that case you need to use one of the next two solutions if you need this type of access.ĮC2 instance connect only support SSH protocol, therefore you can not use EC2 instance connect for connecting to Windows instances. This solution does not allow you to connect to other resources in your VPC ( databases). Moreover, you cannot control the commands with IAM policies. However, AWS CloudTrail does not log executed commands. You can use AWS CloudTrail to log connections to the EC2 instances. The network traffic will then originate from this endpoint. In this case you first must make a EC2 Instance Connect endpoint and connect through that. Also if you connect through the console you need to whitelist the IP ranges of EC2 instance connect mentioned here. If you connect from your own machine your IP address needs to whitelisted in the security group of the instance. ![]() This is because it relies on a tool that comes preinstalled on these AMI’s. With EC2 instance connect you can directly connect to the EC2 instance from the web interface or CLI:ĮC2 instance connect is only support on default AWS AMI’s with Amazon Linux 2 or Ubuntu. Moreover these are more secure and give you better audibility around the external access. There are multiple alternatives you can use to access your internal network. If you use the bastion host as a jump host for other EC2 instances you need to setup SSH key forwarding.You need to secure the network and maintain a list of IP addresses that can access the bastion host.It is hard to audit a bastion host (who connected to it and did what).High availability for your bastion host requires you to have multiple hosts in multiple subnets each with it’s own elastic IP.You need to patch and manage this bastion host, furthermore you must manage access.But with managing a bastion host there are some underlying security and scalability concerns: ![]() Even AWS is giving you instructions on how to setup a bastion host. ![]()
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