I'd like to preface by saying this issue only occurs when connected to my home WiFi network as of Wednesday. When I connect to my office network or to a mobile hotspot everything works as expected, in the past it worked on my home WiFi as well.
aws ssm start-session --target i-ABC --region us-west-2 --document-name AWS-StartSSHSession --parameters 'portNumber=22'
After running the previous command on macOS I am unable to start an SSM session, it hangs and eventually times out. I've done the following steps to try and diagnose the issue:
Analyzing the Session Manager console on AWS, I see a session for each attempt I've done, they are all 'Terminated' and have a duration of around 15 seconds;
The SSM Agent logs on the target machine show the following error message for each attempt;
Encountered error while initiating handshake. Handshake timed out. Please ensure that you have the latest version of the session manager plugin.I've asked colleagues to see if they face any issues, and they do not;
I've performed the same command while connected to other WiFi networks, and it works as expected;
I've removed the last two parts, and it worked successfully (which does not solve the issue, since I am using this to then SSH into the target machine);
aws ssm start-session --target i-ABC --region us-west-2
Items 1 and 2 provide little help, I've confirmed that I have the latest plugin version installed.
Items 3, 4 and 5 have helped me narrow down the issue, and I now think it must be related with my WiFi network and its setup.
Does anyone have an idea as to how I can solve this issue or get closer to its root cause? I truly appreciate any feedback.
