[Updated 2022-11-30] This post explains how to set up robust security headers in NGINX to protect your web application from malicious payloads and other forms of attacks. Choose your HTTP(S) headers wisely.
Cannot sign in to AWS as IAM user with MFA? How to resync your MFA token generator
Problems signing in to AWS? When the login page “Sign in as IAM user” repeatedly says: “Your authentication information is incorrect. Please try again” though you entered correct information, your Gemalto token generator for MFA authentication could be out of sync.
Tip of the day: domain intelligence services by CentralOps
Here is one nifty service that can dig up useful information about a website, a domain or an IP address and it doesn’t cost a dime.
SELinux tips, tricks, hacks and gotchas
Most of us have a love-hate relationship with SELinux.
It’s never too late: cron 101
Good ol’ fashioned cron can greatly simplify system maintenance.
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