The following are best practices when running a node.
Assign static internal IPs to both your validator node and daily laptop/PC. This is useful in conjunction with ufw and Fail2ban's whitelisting feature. Typically, this can be configured in your router's settings. Consult your router's manual for instructions.
In case of power outage, you want your validator machine to restart as soon as power is available. In the BIOS settings, change the Restore on AC / Power Loss or After Power Loss setting to always on. Better yet, install an Uninterruptible Power Supply (UPS).
Clear the bash history
When pressing the up-arrow key, you can see prior commands which may contain sensitive data. To clear this, run the following: