title: EC2 SSH port 22 connection refused even though previously worked
body: <p>I have an EC2 instance which i've got a couple of sites hosted on and it's previously been workin really nice.</p>
  
  <p>Today I try to SSH into it and it just refusing connections on port 22 even though the security group has it open and the security group is set to the instance.</p>
  
  <p>Anyone help me out as to why this could be the case?</p>
  
  <p>I just get this line each time - ssh: connect to host 54.247.99.86 port 22: Connection refused</p>