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This tool checks for and corrects some issues that cause remote connection errors when connecting to a Linux machine through SSH. Method 3: Run the AWSSupport-TroubleshootSSH automation documentĪWSSupport-TroubleshootSSH automation document installs the Amazon EC2Rescue tool on the instance. Note: If your system doesn't have the ss command, then you can use the legacy netstat command with the same syntax shown in the preceding example. Add the following additional line at the top of the rule table, and then restart the SSH service: For more information on Session Manager and a complete list of prerequisites, see Setting up Session Manager.ģ. Note: Installation of the SSM Agent is required to use this method. Method 2: Use AWS Systems Manager Session Manager Note: If you receive errors when running AWS CLI commands, make sure that you’re using the most recent version of the AWS CLI.
Putty ssh connection timed out serial#
For information on configuring the EC2 Serial Console for Linux, see Configure access to the EC2 Serial Console. If your instance is unreachable and you haven’t configured access to the serial console, then follow the instructions in Method 2, 3, or 4. Also, every instance using the serial console must include at least one password-based user. Then, create AWS Identity and Access Management (IAM) policies granting access to your IAM users. You can access the serial console using the Amazon EC2 console or the AWS Command Line Interface (AWS CLI).īefore using the serial console, grant access to it at the account level.
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The serial console connects to your instance without the need for a working network connection. The serial console helps you troubleshoot boot issues, network configuration, and SSH configuration issues. If you set up EC2 Serial Console for Linux, then you can use it to troubleshoot supported Nitro-based instance types. There are four methods for performing these tasks: The security group and network ACLs allow incoming traffic on TCP port 22.The SSH TCP port 22 is in the listening state.The SSH service is running on the instance.There isn't a firewall blocking the connection.