Daniel Cao

Daniel Cao

How to Check DNS TTL in Linux

DNS TTL, or time to live, is the element of a DNS record that tells the requester how long the record is valid. In other words, if the TTL for our DNS record is set to 24 hours, once a…

4 Ways to Check SSL certificate

SSL certificates are an important part of online security. They create a secure connection between your website and your visitors, which helps to protect their data. In order to keep your website safe, it is important to make sure that…