How to use icanhazip.com icanhaztrace.com and icanhazptr.com with curl | Major Hayden has created the epic site icanhazip.com which will show your current IP address. There are a few more additions to know about as well. Here is the scoop!
Beware of Scam Emails about China Domain Name Registration Service | If you get an email from a random Chinese company asking for authorization about registering a similar domain name as yours, it’s a scam. They are simply waiting for you to respond and then will attempt to force you to register domains with them. The best thing is to just ignore and delete any such emails!
Mitigate DoS Attacks in Linux with a blackhole route | If you are under a DoS attack, it is best to route the offending IP to a blackhole or null route rather than rejecting or other actions on the traffic. Here’s how it works in Linux!
Use Google Authenticator For Two-Factor SSH Authentication in Linux | For a very secure and convenient way to add two-factor ssh auth to your Linux server, you can use Google Authenticator. I’ll show you how to set this up!
How-To Redirect All Directories of oldsite to newsite in htaccess | Here is a quick tip to help redirect an existing old domain url structure to a new domain. Scenario is two domains are both pointed at same server and web root. Need to substitute old domain for new domain and keep all existing URL structure in tack.