VPS Guide: Your Go-To for VPS, Ubuntu & Command Line Success

Set Up UFW with Proto Rules on Ubuntu

Category: VPS Setup

Filter by protocol with UFW on Ubuntu—install with

apt install ufw

then allow TCP SSH with

ufw allow proto tcp to any port 22

UDP DNS with

ufw allow proto udp to any port 53

and enable with

ufw enable

Check with

ufw status

—expect \"22/tcp ALLOW Anywhere\" \"53/udp ALLOW Anywhere\" Test SSH with

ssh user@ip

and DNS with

dig @ip google.com

—expect responses On Vultr this fine-tunes MySQL (TCP 3306) or FTP access—add logging with

ufw logging on

to /var/log/ufw log ensuring uptime with protocol-specific rules