Atsign Announces SSH No Ports 4.0 with Windows Support and SDK


New SDK enables OEMs and systems integrators to incorporate SSH No Ports addressability and security features into their solutions

SAN JOSE, Calif., Dec. 05, 2023 (GLOBE NEWSWIRE) — Atsign, a provider of open-source Networking 2.0 technology, today announced the release of SSH No Ports 4.0. SSH No Ports is a popular system administration tool used to access remote systems (gateways, industrial PCs, and many other devices) via SSH from anywhere, without the need for network configuration, and without any open ports on either device. SSH No Ports popularity has grown because it cryptographically secures previously exposed services which mitigates against TCP attacks by removing the need for web servers/daemons to be listening on external interfaces. It does all this while still allowing full access by authorized people.

This major update expands support to Windows, adding to the existing support for MacOS and Linux. Additionally, the release includes a much-anticipated SDK that allows OEMs, systems integrators, and app developers to incorporate the unique addressability and security features available with SSH No Ports into their solutions. Early examples of how SSH No Ports is being integrated into other products include,


  • A major manufacturer of home networking appliances is integrating SSH No Ports into their device to provide their customers with access to the configuration interface (a local web service) while they are away from home. Their customers do not need to add any routing rules.
  • A prominent LoRaWAN® gateway provider is adding SSH No Ports to their solution to provide customers access to their gateway management interfaces that sit on public cellular networks without needing the provider to set up NAT and without exposing any network attack surfaces on the gateway.

“We are excited to announce the 4.0 release of SSH No Ports,” said Colin Constable, Co-founder and CTO of Atsign. “With Windows support and the SDK, SSH No Ports 4.0 combines unmatched security with the ultimate ease of use and access. This Networking 2.0 solution is ideal for any organization that needs to securely access remote devices.”

To learn more about SSH No Ports 4.0 or to download a free 14-day trial version, please visit

About Atsign

Atsign specializes in Networking 2.0 infrastructure, software solutions, and SDKs. The company’s mission is to make the Internet more secure, private, and accessible for everyone while greatly reducing network complexity. Atsign’s products are based on the promise of a new approach to networking using public key cryptography and microservices.


Scott Hetherington
[email protected]

A Media Snippet accompanying this announcement is available by clicking on this link.

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