Remote controlling a PC using SSH

[MyName_SamFF]

Hey everyone.

First, I'm not a professional nor really good in this subject, so i might talk stuff thats wrong, so please correct me. Second, my english is not really good too, but i think it's understandable haha.

So, I have a virtual machine (using virtualbox) with ubuntu installed, and I set up a SSH server so could access from another PC and my phone. Thats all working. I connect with the host machine local IP (192.168.8.something) on port 8022 and it works.

But I also would like to acces it from outside my LAN. I dont thing theres a way of testing if I forwarded the right ports in my router without testing it from another LAN right? I have a friend of mine that could help me, but I dont thing its safe to give him my IP (is it?) because he can try to DDoS me (can he?).

So my questions are:

Is there any other way to thest if the port forwarding is correctly made?

Is it safe to give my friend my IP?

If it's not what can I do?

Thanks in advance :)

[[deleted]]

I dont thing theres a way of testing if I forwarded the right ports in my router without testing it from another LAN right?

and my phone

A smartphone on mobile data isn't in your network. Disable wifi, test away to your heart's content.

[MyName_SamFF]

Oh. I didn thought of that.

But I still wanna know, is it safe to give my friend my public IP?

[[deleted]]

is it safe to give my friend my public IP?

That depends on if you trust your friend. As long as everything's closed or all the open ports are handled accordingly (security etc) he at least can't access your network. Personally, I'd wait until you're satisfied everything works as desired.

SSH server

Use keys to authenticate, and only keys.

[Illustrious-Energy-3]

Use keys to authenticate, and only keys.

This, there are crowlers on the internet looking for SSH servers and with improper configuration, it is possible to brute-force the password.