server hardening 7 min read
Linux Server Hardening Checklist; In Order of Impact
Start server hardening where it actually prevents intrusion: SSH keys, firewall, updates, and a non-root user. The order...
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EPP code 7 min read
EPP Code and Domain Transfer Lock: A Practical Guide
If your domain won't move, the problem is usually the EPP code or the transfer lock. Here you'll see the correct order o...
domain extension 6 min read
Domain Extension: .com or .ir? A Guide to Making the Right Choice
Choosing a domain extension isn't just a matter of taste; it affects user trust, local SEO, and the legal constraints of...
Fail2ban 6 min read
Setting Up Fail2ban to Automatically Block Attackers
If your SSH or WordPress log is full of failed attempts, this guide walks you step by step through the default jail, wri...
DNS cache 7 min read
DNS Cache: Why Record Changes Don't Show Up and How to Flush It
You've changed the DNS record but the site still loads the old version? Get to know each DNS cache layer one by one and...
PTR record 6 min read
PTR Record: Why Your Email Server Is Being Rejected
If your server's emails are going to spam or being rejected with a 550 error, the problem is likely a missing PTR record...
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