I cant ssh into my ec2 instance all of a sudden


Yesterday, my ec2 instance was working perfectly but today I can not ssh into it. I have rebooted, stopped and started my instance, then made sure I have the correct public dns when trying to ssh. I have also ensured that my security groups allow port 22 on my ip address. For debugging purposes, I allowed all IPs for my SSH and it still did not work.

error: 22: Operation timed out

I tested SSH into my other instance and that seemed to work perfectly. I have not changed my VPC settings or my Subnet settings at all since creation so I am not sure how they would be causing this issue. Please help!

2 Answers


Timeout errors can be attributed to network issues and it’s great that you have tried to troubleshoot them by checking the security groups and rebooting/stopping/starting your instance.

To add on, you can try the following methods:

Hope it helps!

answered 13 days ago

Several reasons why you are unable to SSH into your EC2 instance. Here are a few things you can try:

  1. Check the status of your instance: Make sure that your instance is in the "running" state. You can check this by going to the EC2 dashboard and looking at the "Instance State" column. If your instance is not in the "running" state, you may need to start it.

  2. Check the security group settings: Make sure that your security group allows incoming traffic on port 22. If you have changed the security group settings recently, it may take some time for the changes to take effect.

  3. Check your VPC settings: Make sure that your VPC settings are correct. If you are using a custom VPC, make sure that it is properly configured.

  4. Check the network ACL settings: Network ACLs are another layer of security in your VPC. Make sure that your network ACLs allow incoming traffic on port 22.

  5. Check your internet connection: Make sure that you have a stable internet connection. You may also want to try using a different device or network to see if the issue persists.

  6. Check the SSH configuration: Make sure that your SSH configuration is correct. You may want to try using a different SSH client or checking the SSH logs for more information.

Note: If none of these solutions work, you may want to consider creating a new EC2 instance and transferring your data over to it.

answered 13 days ago

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