cant ssh to a ec2 instance created by autoscaling group for a ecs

Question

Hello,

i 'm using the default vpc/subnets/secrurity group to host ec2 of a ecs via an autoscaling group. the ssh key is ok. i even tried to generate a new key and sent it by this command

```
aws ec2-instance-connect send-ssh-public-key
```
it was successful.
but still, I can't SSH to this instance 
via classic SSH command 
![Enter image description here](/media/postImages/original/IMmbTRc_tvSP6welwfRpl8jA)

via EC2 Instance Connect or EC2 Instance Connect Endpoint
![Enter image description here](/media/postImages/original/IMwMNfoj_wQpuD0wH9UM_eSQ)

this is a knowing issue ? is there any particular confs to enable ssh? 
thank you for your help

Mikel Del Tio · Answer

Hi,

There are several reasons why it can fail when trying to connect to an EC2 instance using Amazon EC2 Instance Connect, so I recommend you take a look at the following [AWS Knowledge Center article](https://repost.aws/knowledge-center/ec2-instance-connect-troubleshooting#), which not only describes the most common issues , but also how to resolve it.

cant ssh to a ec2 instance created by autoscaling group for a ecs

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