Port Forwarding, not working?


it seems that all my ports that i have tested, are closed. I tested with Open Port Check Tool - Test Port Forwarding on Your Router . I have forwarded port 6000 on my router and local ip , TCP port and UDP port on 6000 , alway on. port 22 are closed as well it says.

Anybody pleas help me to resolve this?

Best regards,

check if you have any fw (on server or cloud based) rules active.
check on server with sudo ufw status



Thank you for your fast reply. I did test, and it saysv ALLOW on all.

Best regards

After i have secured the shared memory, and reboot the node, computer. Du i log in as Cardano user or root user?

When i setup a SSH tunnel with the following command: ssh -L 3000:localhost:3000 @

I get asked to typr the passw. I type the user passw, then i get asked for the varification code. What verification code is that ?

Best regards,

2fa authentication?

Yes i did install that, but the key does not seen to work, the one in the app.

Maybe i should start over and re-install Ubuntu. to see if i can do anything better. And do the hole hardening server guide again.

Should i upgrade to the new Ubuntu operating system? It keeps asking me if i want to.

Best regards,

you can use/install 22.04

Thank you very much