The simplest option is to use Teleport Cloud which you can try for free.
#Bastion ec2 full
If you have a hard requirement to self-host your SSH bastion on AWS, using OSS Teleport is a good balance between the full flexibility you get with self-hosted OpenSSH and your time.įigure 2: Teleport takes care of the items in gray so you don't have to worry about them anymore.
Access to servers will now be conducted via the ip address of the bastion server. Create security groups and network ACLs / firewall to control access to the bastion (public internet) and servers in VPCs and private subnets (can only be accessed via bastion)Ħ. Don't allow or limit interactive sessions on the bastion server (use ProxyJump instead).ģ.
#Bastion ec2 software
OSS Teleport takes care of all of the software configuration tasks you would have to take on with the self-hosted OpenSSH approach.ġ. For example, when you run the internet facing Teleport Proxy Service, by default you can't even create an interactive shell on the proxy. Self-hosted Teleport reduces the amount of work you have to do to get a SSH bastion running on AWS as it is secure by default out of the box. The next option is running self-hosted OSS Teleport. The downside is creating and managing OpenSSH, AWS, and a SIEM.įigure 1: Setting up a SSH Bastion on AWS. It saves you time and gives you flexibility on how you configure your infrastructure. Most attackers will simply move on to lower-hanging fruit. If you implement the above five items, this will put you ahead of 80% of the internet.
#Bastion ec2 update
Update configuration management to handle SSH key lifecycle (grant, revoke, and rotate keys) on the bastion and target hosts. Capture and send all logs to centralized logging infrastructure.ĥ. Create security groups and network ACLs to control access to the bastion (public internet) and servers with a VPC (can only be accessed via bastion)Ĥ. Don't allow or limit interactive sessions on the bastion server (use `ProxyJump instead).ģ. Use CIS or STIG hardening guides.Įnable automatic upgrades. In general, at the minimum, you'll have to do the following.ġ. SSH Best Practices using Certificates, 2FA and Bastions
#Bastion ec2 how to
The internet is full of guides on how to do this - we've listed a few below. Running OpenSSH on an EC2 instance is the classic way to build a bastion server on AWS. Below is a list of the most popular ways. There are many ways to set up SSH bastion servers on AWS.
Different options for SSH bastion servers on AWS You can enforce centralized audit logging to track who logged into a server and what they did on a server. You can enforce centralized SSH key management (grant, revoke, and rotate keys). Bastion hosts are single-purpose machines and you can dramatically reduce what runs on them. Your SSH servers (other than the bastion itself) no longer need to be Once you start thinking about bastions from that perspective, bastions become an important part of your efforts to reduce and mitigate attacks on your infrastructure. A better option would be to build a strong wall around them with a few gates where you can focus your hardening efforts and control access to your entire city. You can secure every single building in your city, but that will be costly and there is a good chance you'll forget about one of them. Think of your EC2 instances as buildings within a medieval city. However, this will create more work for you and likely reduce your security posture. You can perform Linux hardening on every EC2 instance you have and tie them into security primitives that AWS provides to avoid bastion servers completely. Strictly speaking, you don't need a SSH bastion server. Why do you need a SSH bastion on AWS at all? Management and access to your compute infrastructure.
Once you have a few AWS EC2 instances, it's time to start thinking about setting up an EC2 instance as an SSH bastion server so you can centralize and secure
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