I would suggest adjusting the firewall rule to only allow ssh from your specific IP.
For example:
sudo ufw allow from 15.15.15.15/32 to any port 22
I would suggest adjusting the firewall rule to only allow ssh from your specific IP.
For example:
sudo ufw allow from 15.15.15.15/32 to any port 22
RE: How to setup a Linda masternode on Ubuntu 16 Linux