Bastion Host

Anotações sobre o Bastion Host para ajudar na preparação das certificações AWS.

Até o momento as anotações são para as certificações abaixo:

• Link oficial

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Anotações gerais

• Instância sempre na Subnet Publica

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SSH Agent Forwarding

Documentação oficial

• Copiar a public key para as instâncias que serão acessadas

Step 1: Create Public/Private Key in Remote Client EC2

ssh-keygen

Step 2: Setup Authentication

• Copy the contents of public key form remote-client to the

~/.ssh/authorized_keys file of both Bastion and Private EC2.

Step 3: Use SSH Agent Forwarding

• Run the following commands on the remote-client EC2 instance

Step 4: Test the Setup

• From remote-client EC2, run the following command:

ssh -A [BASTION-EC2-IP]

• Once you are logged into Bastion, try to connect to Private EC2

ssh [IP-OF-PRIVATE-EC2]

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How to Record SSH Sessions Established Through a Bastion Host

Documentação oficial

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Referências

• AWS Security Blog - Tag: Bastion host
• Linux Bastion Hosts on AWS Quick Start Deployment Guide