Could not connect to '192.168.2.100' (port 22): Connection failed.

As an AI language model, I do not have enough context to provide a specific solution to this problem. However, here are some general steps you can try to resolve the issue:

1. Check if the IP address and port number are correct: Make sure that the IP address and port number you are trying to connect to are correct. If you are not sure, try pinging the IP address to see if it is reachable.

2. Check if the SSH service is running: Ensure that the SSH service is running on the target machine. You can check this by running the command "systemctl status sshd" on the target machine.

3. Check if the firewall is blocking the connection: Make sure that the firewall on the target machine is not blocking incoming connections on port 22. You can check this by running the command "sudo ufw status" on the target machine.

4. Check if there are any network issues: There may be network issues that are preventing the connection. Check if there are any network outages or if there are any issues with your network configuration.

5. Try using a different port: If port 22 is blocked or not available, try using a different port for the SSH connection. You may need to configure the SSH service to listen on a different port.