SSL Session
Session ID
Cipher Suite
SSL Port
Supported Protocol
Supported Cipher Suites
Certificate Chain INFO
Subject DN
Issuer DN
Serial No
Expires on

How to use Checker Online Service

1- Enter Domain name you want to check

2-Enter Port Number by Default 443

3- Press Check to get all SSL/TLS Information about any Domain Name

Today, dealing with the Internet has become one of the indispensable necessities for each of us. especially the many important needs in your daily life. such as buying through commercial websites or conducting your banking transactions. from transferring money and paying various utility bills to paying the fees for your children’s school fees, and so on. which requires you Enter and use your important and sensitive data. such as your credit card numbers, passwords, username and details of your important transactions. Therefore, you must ensure the means of securing the sites on which you enter your data.

You can do this by making sure that the site you will enter your data on uses TLS / SSL certificates. which you can identify simply by the lock code before the website's domain name followed by the word Https.

With its TLS /SSL Checker service, KF-Cipher allows you to check the data of TLS /SSL certificates for any website. that you may intend to interact with so that you can be sure of the strength of the protection. it provides for your personal data.

SSL Checker CyberSecurity Tool

An SSL checker, also known as an SSL/TLS scanner or SSL/TLS tester, is a tool used in pentesting to assess the security configuration of SSL/TLS certificates on a target system. SSL (Secure Sockets Layer) and its successor TLS (Transport Layer Security) are cryptographic protocols used to secure communication over the internet. Here's an overview of how SSL checkers are used in pentesting: Certificate Validation: SSL checkers validate the SSL/TLS certificates installed on a target system. They verify if the certificate is trusted, correctly issued by a trusted Certificate Authority (CA), and not expired. This helps identify any misconfigurations or improper certificate management practices that may weaken the security of the system. Cipher Suite Analysis: SSL checkers assess the supported cipher suites on the target system. Cipher suites define the encryption algorithms, key exchange methods, and message authentication codes used in the SSL/TLS handshake process. Pentesters can use SSL checkers to identify weak or outdated cipher suites that may be vulnerable to attacks or lack robust encryption. Vulnerability Detection: SSL checkers can detect known vulnerabilities or weaknesses in SSL/TLS implementations. This includes vulnerabilities such as POODLE (Padding Oracle On Downgraded Legacy Encryption), Heartbleed, BEAST (Browser Exploit Against SSL/TLS), or insecure SSL/TLS versions like SSLv2 and SSLv3. Identifying such vulnerabilities helps in assessing the overall security posture of the target system and recommending appropriate remediation measures. Certificate Chain Analysis: SSL checkers analyze the certificate chain presented by the server during the SSL/TLS handshake. They ensure that the chain is complete, properly ordered, and does not contain any untrusted or revoked certificates. This helps in identifying potential issues with the certificate chain, which can impact the trustworthiness of the SSL/TLS connection. Weak Key and Certificate Configuration: SSL checkers can identify weak key lengths, outdated signature algorithms, or insecure certificate configurations. These checks help in assessing the strength of cryptographic keys and ensuring that certificates are issued and configured according to best practices. Protocol Support: SSL checkers examine the supported SSL/TLS protocol versions on the target system. They identify if outdated or insecure protocols such as SSLv2, SSLv3, or early TLS versions are enabled, which can pose security risks. It helps in recommending the use of modern and secure protocol versions like TLS 1.2 or TLS 1.3. By using an SSL checker as part of pentesting activities, cybersecurity professionals can identify SSL/TLS-related vulnerabilities, misconfigurations, or weaknesses that can be exploited by attackers. The results from SSL checkers can guide remediation efforts, ensuring that SSL/TLS configurations are properly configured, secure, and aligned with industry best practices. There are various online SSL checkers and command-line tools available for SSL/TLS scanning, such as SSL Labs' SSL Server Test, Qualys SSL Labs, Nmap, OpenSSL, or Burp Suite's SSL/TLS Scanner. These tools provide detailed reports, grades, and recommendations to help PenTesters and administrators improve the security of SSL/TLS implementations.

What’s the TLS/SSL

TLS/SSL is an acronym for Transport Layer Socket /Secure Socket Layer It is the most important security factor in the Internet. This protocol secures the communication between servers and client devices, which is the backbone of the majority of activities that users need on the Internet, such as securing communication between websites and their visitors, e-mail servers and their users, mobile applications and their servers.

The most important and strongest use is to secure e-commerce activities and electronic banking services on the Internet.

The basic function of the SSL protocol can be described in a simplified way as the process of securing data and information during its transmission over various information networks by encrypting this data using Asymmetric Key cryptographic algorithms that use the public key.

The SSL protocol does not care about the quality of encrypted data, which means that it can be used in all web applications based on the http protocol or any system that requires communication between the client device and the server device. It is also widely used in Internet of things systems (IOT) or applications.


The idea of the TLS protocol started as a project that Netscape browser developers worked on in 1995 and came out in its first version. The first version of TLS as well as the second and third version had some security problems. As a result, SSL should not be used alone, but rather it should be used in addition to TLS.

Also, not all TLS versions are completely secure. The first version, which was released in 1999, is the least secure. TLS 1.1 was released in 2006, which is better than its predecessor, TLS 1.0, and then TLS 1.2 in 2008, which is the best and most complex, but Provides security if configured correctly.

TLS 1.2 supports the AES algorithm with CBC Mode. It also has many better features than its predecessor and finally TLS 1.3 version has a simpler and more secure design using the most powerful Cipher Suite.


One of the most important applications in using TLS / SSL is e-commerce and electronic banking transactions. This is done by encrypting the data sent through websites, which in this case contains important data for customers such as credit card data, bank accounts, passwords, user names and all sensitive and important data related to those Operations. The TLS protocol helps protect the communication between the client and the server by encrypting the communication channel between them to secure the data transmission process through that channel by ensuring its confidentiality and ensuring the identity of the Parties as well as ensuring that this data is not tampered with by any attacker.

One of the most important goals of the TLS protocol is to prevent Man in the Middle attacks. In this type of attack, the attacker intercepts the data traveling through the communication channel and tries to decrypt that data, then tamper with it, re-encrypt it and then send it back again. TLS protocol conquers these Attacks by verifying the identity of servers and choosing the identity of clients using certificates and trusted certificate authorities.

Further Reading

Read More About Transport Layer Security

Waht's SSL Encryption

What is SSL/TLS: An In-Depth Guide

SSL vs TLS - What's the Difference?