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.
Letsencrypt tips and tricks
Who wants to issue certificates manually if they can take Letsencrypt’s Certbot to the task.
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