In ssh port forwarding, when forwarding to local, I want to forward it to the specified path in local.

Looking at this page, I understand about ssh port forwarding roughly.

http://komaken.me/blog/2014/05/23/ssh-remote-forward%E3%82%92%E5%88%A9%E7%94%A8%E3%81%97%E3%81%A6%E5%A4%96%E9%83%A8%E3%82%B5%E3%83%BC%E3%83%90%E3%81%AE%E3%83%AA%E3%82%AF%E3%82%A8%E3%82%B9%E3%83%88%E3%82%92%E3%83%AD%E3%83%BC%E3%82%AB/

When accessing an EC2 instance with a global address (example.com:9876),
I would like to transfer to the server (localhost:80) that is starting with local.

 *Because I don't actually have a domain yet
This is the public DNS that can be used when creating EC2.
ec2-<IP address>.ap-northeast-1.compute.amazonaws.com

However, I would like you to forward it to the URL of localhost/sample/hoge when you receive a GET request for the URL example.com/sample/hoge.

ssh-R80:example.com:9876 [email protected]

Based on these, there are two things I don't understand.

1) After ssh with the above command and curl, port9876: connection denied is displayed.
In addition, the EC2 security group is open to the public.

curl example.com:9876-X GET

Custom TCP Rules (Type)
TCP (Protocol)
9876 (port)
0.0.0.0/0 (source)

2) Also, in question 1, we did not specify a path, but we do not know how to transfer it to the path specified in local above.

Thank you for your cooperation.