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

Install UFW with Deny Rules on Ubuntu

Category: VPS Setup

Block specific IPs with UFW on Ubuntu—install with

apt install ufw

then deny an IP (e g 203 0 113 1) with

ufw deny from 203.0.113.1

Allow SSH (ufw allow 22) set defaults with

ufw default deny incoming

and enable with

ufw enable

List rules with

ufw status numbered

—expect \"DENY 203 0 113 1\" Add logging with

ufw logging on

—check /var/log/ufw log for blocks like \"[UFW BLOCK] SRC=203 0 113 1\" On Vultr this stops known threats to MySQL or FTP—test by pinging from the denied IP expecting no response ensuring uptime without manual bans like Fail2ban

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