What are possible attacks when using SSH and Local or Remote Port Forwarding? What are the threats? I understand that there are many, but what are they? And also, how could they be avoided?
closed as too broad by Adi, Mark Buffalo, Steffen Ullrich, Matthew, LvB Mar 7 '16 at 10:49
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Assuming you're talking about exposing your local ssh to the public internet:
Anyone can start trying to login with any username and password, essentially trying to bruteforce your account.
If you only allow public/private key authentication this reduces your risk greatly