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

Set Up UFW with Interface Rules on Ubuntu

Category: VPS Setup

Restrict UFW to an interface on Ubuntu—install with

apt install ufw

then allow SSH on eth0 with

ufw allow in on eth0 to any port 22

Add HTTP with

ufw allow in on eth0 to any port 80

set

ufw default deny incoming

and enable with

ufw enable

Check with

ufw status

—expect \"22/tcp (eth0) ALLOW Anywhere\" Test SSH with

ssh user@ip

—expect success only on eth0 On DigitalOcean this isolates MySQL or FTP traffic—verify interface with

ip link

(e g \"eth0: UP\") ensuring uptime by securing specific network paths without affecting others