Abstract digital artwork with a flowing wave-like pattern comprised of small green dots that gradually fade into the white background. The wavy design, reminiscent of an SD-WAN backbone, creates a sense of movement and fluidity.

What is SSL Scanning?

SSL (Secure Sockets Layer) and a more modern version called TLS (Transport Layer Security) are the industry standards for transmitting secure data over the Internet. SSL encrypts data that’s being sent between a remote user and a web server. It uses multiple blocks of highly complex algorithms to scramble data.

An ‘encryption key’ is needed to unscramble or decrypt the data so it can be used. Currently, no weakness has been found in these encryption algorithms. This means brute force is the only existing form of attack that can decrypt encrypted data.

A glowing padlock icon with digital circuitry in the background symbolizes cybersecurity and data protection, enhanced by an SD-WAN backbone. The padlock is illuminated with a blue light, creating a futuristic and high-tech feel.

How Does SSL Work?

When you attempt to access a website, the two entities, browser and web server, create a secure SSL connection. All data transferred back and forth is encrypted. SSL encryption and decryption are key-based. There are three keys used in the SLL process. They are public, private, and session keys.

Download our latest eBook. This new approach to networking comprises a set of truly integrated, cloud-managed security services delivered on-prem or in the cloud with centrally managed security. Learn how to:

  • Reduce complexity and operational overhead
  • Deliver ease of use/transparency for users
  • Enhance security with zero-trust network access
An image showing a high-tech control room with multiple computer workstations and large screens displaying data. A green text box in the top left reads, "SASE: The Network of the Future Is Here Today." The bottom-left corner features the logo "Open Systems," highlighting them as a leading SASE provider.

The challenge with this scenario is how do intermediate devices perform SSL scanning or TLS scanning. It resides in the communication path and needs to inspect encrypted traffic for cyber-attacks, such as malware. If the traffic is encrypted, it can’t be inspected.

Inspection devices such as next-generation firewalls, CASBs, routers, and secure web and email gateways need to perform deep packet inspection using SSL scanning. These cybersecurity devices can be found wherever a connection to the Internet or cloud service is desired.

Cybersecurity SSL scanning or TLS scanning can only occur if the data is not encrypted. This means devices that stand in the middle of the data path and perform cybersecurity need to decrypt the data, inspect it, and then re-encrypt the data.

Three people are sitting at desks in a modern office environment, working on computers with headsets on. They are separated by glass partitions. The lighting is bright, and a large world map can be seen in the background. Two are smiling and appear in conversation about Network Firewall Security

Devices that stand in the middle of a communication path are intended to keep users and organizations safe from malicious internet traffic. When the user initiates a session with a web server, the device receives the request. It acts as an intermediary, having a conversation with one entity such as a web browser, and then relaying that conversation with the web server. All the time, they are inspecting what one is communicating with the other.

SSL scanning has been in use since the mid-’90s. It’s been upgraded to TLS scanning, which includes many improvements to keep pace with the ever-growing number and diversity of cyber-threats. When developing a cybersecurity posture, it’s important to understand where the SSL or TLS scanning is performed and the depth and quality of the inspection.

A modern, open office space with a glass-enclosed meeting room in the center. The room has computer workstations and is elevated above the floor, creating a sleek industrial aesthetic with exposed beams and blue ambient lighting.

Keeps Users Productive and Safe While Guarding the Edge

Contact our customer advocates and learn about the various technologies, such as SSL/TLS scanning, used to deter, detect, and remediate cyber-attacks using a multi-layer cybersecurity stack.

cloud security management
A bright green abstract background with irregular, geometric shapes resembling a mosaic or stained glass pattern. The shapes vary in size and are outlined slightly darker, creating a visually engaging texture.

Leave Complexity
Behind

To learn how Open Systems SASE Experience can benefit your organization, talk to a specialist today.

Contact Us