💪💪~MAINNET~💪💪

Secure Server Setup

generate ssh keys

ssh-keygen -t rsa
cat ~/.ssh/id_rsa.pub # "your public key"

add new node user

sudo adduser node --disabled-password -q

# upload public ssh key

mkdir /home/node/.ssh
echo "your public key" >> /home/node/.ssh/authorized_keys
sudo chown node: /home/node/.ssh
sudo chown node: /home/node/.ssh/authorized_keys

# disable root login

sudo sed -i 's|^PermitRootLogin .*|PermitRootLogin no|' /etc/ssh/sshd_config
sudo sed -i 's|^ChallengeResponseAuthentication .*|ChallengeResponseAuthentication no|' /etc/ssh/sshd_config
sudo sed -i 's|^#PasswordAuthentication .*|PasswordAuthentication no|' /etc/ssh/sshd_config
sudo sed -i 's|^#PermitEmptyPasswords .*|PermitEmptyPasswords no|' /etc/ssh/sshd_config
sudo sed -i 's|^#PubkeyAuthentication .*|PubkeyAuthentication yes|' /etc/ssh/sshd_config

sudo systemctl restart sshd

# enable firewall

sudo ufw default allow outgoing
sudo ufw default deny incoming
sudo ufw allow ssh
sudo ufw allow 9100
sudo ufw allow 26656
sudo ufw enable