What is TLS Checker?

TLS Checker is a tool to easily test a server's TLS connection by entering the domain and port number of the target server. It also provides information about the server certificate, including the issuer, number of days until expiration, and other details.

What is TLS?

TLS (Transport Layer Security) is a protocol for secure communications. TLS is widely used in communications between clients and servers, such as web browsers and applications.

TLS Checker Features

TLS Checker has the following main features

• Connect to the server with each version of TLSv1.2 or higher and view connection status and cipher suites
• View detailed information about the server certificate, including the issuer and number of days until expiration
• Export server certificates in PEM format

With these features, TLS Checker makes it easy to check server security and certificate status.

Advantages of TLS Checker

Using TLS Checker, the security status of the target server can be quickly checked and used for evaluation. It also checks the source of the server certificate and the number of days until its expiration date, making it easy to obtain information about the certificate's reliability and security.