ISL is a leading German software manufacturer in the field of IT security with a focus on network access control (NAC). Since 1999, ISL has been helping its customers arm themselves against the ever-increasing and changing challenges to IT security and has made it its mission to protect know-how and resources through IT security made in Germany - secure, reliable and trustworthy! Many years of NAC competence and innovative strength characterize the team of ISL GmbH and allow the company to grow steadily. Customers appreciate the flexibility and creative ideas when it comes to implementing the topic of NAC simply and efficiently. Since February 2019, ISL is a business unit of DTS IT AG.