Security & Hardening Scripts - Category

Disabling Unnecessary Services on Ubuntu via Shell Script

Your Fresh Ubuntu Server is Overweight You just spun up a fresh Ubuntu box. Feels clean, right? Actually, it's not. Out of the box, Ubuntu is dragging...

Automated Password Policy Enforcement Scripts for Ubuntu

Stop Trusting Users with Passwords Users are lazy. Fact. If you let them, they will use "LetMeIn1!" until the end of time. You can beg them to use bet...

Shell Scripting for Real-Time File Integrity Monitoring

Why Your Server Needs a Watchdog You blink, and somebody alters your `/etc/passwd`. It happens that fast. Relying on daily scans? That's just giving a...

Automating Two-Factor Authentication Setup on Ubuntu SSH

Naked SSH is a Ticking Time Bomb Passwords leak. SSH keys get copied. Relying on a single line of defense to protect your servers is basically leaving...

Scripting Rootkit Detection on Ubuntu Servers Daily

The Invisible Threat Lurking in Your System Rootkits are terrifying. They don't just break into your server. They move in. They change the locks. They...

Why Your Ubuntu Server Needs Automated AppArmor Profiles

Stop Hand-Coding Your Security Rules You spun up an Ubuntu server. Great. Then you looked at configuring AppArmor and probably wanted to cry. I don't ...

How to Script IPTable Rules for Enterprise Ubuntu Servers

Stop Typing Rules Manually Before You Break Something Let’s get one thing straight. If you are still typing firewall rules one by one on a production ...

Automated Vulnerability Scanning on Ubuntu via Bash

Stop Pretending You Have Time for Manual Audits Let's be honest. Nobody actually enjoys sitting around running security checks by hand. It's tedious. ...

Writing a Zero-Trust Network Config Script for Ubuntu

Trust No One: Bringing Zero Trust to Your Ubuntu Box Let's get one thing straight. "Zero trust" sounds like marketing fluff sold by guys in expensive ...

Shell Scripts for Auditing User Permissions on Ubuntu

Why Your Ubuntu Server is Probably a Sieve You spun up an Ubuntu box. Set up a few users. Gave your dev team access. Fast forward six months. Who actu...

Automating SSL Certificate Renewal with Cron and Bash

The Midnight Panic of an Expired SSL We've all been there. Your phone buzzing at 2 AM. Your website is throwing that terrifying red "Not Secure" warni...

Building a Custom IDS with Shell Scripts on Ubuntu

Ditch the Bloatware: Why Roll Your Own IDS? Most enterprise intrusion detection systems are massive resource hogs. You install them, they eat half you...

How to Script Fail2Ban Configuration for Ubuntu Server Defense

Stop Letting Bots Hammer Your Server Open up your Ubuntu auth logs right now. Go ahead, I'll wait. You see them, right? Endless failed SSH login attem...

Automating SSH Key Management on Enterprise Ubuntu Servers

Stop Manually Copying SSH Keys Like It's 2010 Let's get real. If you're still pasting `id_rsa.pub` into `authorized_keys` files across fifty servers, ...

10 Essential Bash Scripts for Ubuntu Server Hardening

Your Fresh Ubuntu Server is a Sitting Duck You just spun up a brand new Ubuntu VPS. Feeling good about it? Don't. Within three minutes of grabbing a p...