Accessing DL machine from outside home network

I have an ubuntu server with Deep Learning setup and accessible in home network. I need to work on it remotely, e.g, from a friend’s home. I tried the following:

  1. Added a port forwarding rule in my router (D-Link DIR-650L) and restarted the router

  1. Went to and tried the port 22. Shows error.

Could someone help me?

It seems working now. Able to access jupyter notebook using my mobile phone’s internet. Was playing with router settings last 12 hours, not sure what change made it work. Now using a different number for public port. Disabled SPI in firewall settings. Using dynamic dns from still shows error for the port. But I’m able to ssh into the server using the public ip of the router.

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