Secure Shell utilizes client-server architecture: by default, the server listens to TCP port 22, which has been officially assigned for Secure Shell, and clients initiate connections to this port. The listener port can be changed in the server configuration.
Secure Shell defines a packet-based protocol that runs over a reliable transport stream, usually TCP. The protocol does not run over UDP.
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Highlights from the SSH.COM blog:
Cryptomining with the SSH protocol: what big enterprises need to know about it
Cryptomining malware is primarily thought of as targeting desktops and laptops and is used to hijack system resources to mine cryptocurrency. Read more
SLAM the door shut on traditional privileged access management
Did you know that something as trivial-sounding as granting access for your developers or third parties to a product development environment can throw a gorilla-sized monkey wrench into your operations and productivity? Read more
We broke the IT security perimeter
Everyone understands the concept of a security perimeter. You only gain access if you are identified and authorized to do so. Read more