LeTOS – secure embedded Linux

LeTOS – secure embedded Linux

LeTOS-powered thin clients are efficient and flexible – with enhanced functionality, hardened security and ZeroConfig ‘zero-touch’ configuration.

LeTOS – safety through security

LeTOS has been developed from the core up to be secure, with specially designed hardening for banking and financial sector usage. Corporate organisations also gain from the powerful security functionality of LeTOS. The highly compact and customised LeTOS operating system, with its own in-built and secure certificate store, makes it a nigh-on impossible challenge for hackers and malware.

LeTOS – safety through security


USB device security

One of the biggest challenges to any business is leakage of data from the use of USB storage devices. Modern devices such as phones and cameras also pose a significant threat to the corporate infrastructure. LeTOS is equipped with a powerful and configurable USB Device Control Manager, enabling administrators to create USB device profiles which allow or deny USB devices using product and class IDs.

No-touch configuration

All LeTOS-powered devices are delivered with ZeroConfig, a simple-to-use and highly functional zero-onfiguration technology. ZeroConfig allows administrators to configure devices on boot, using a centrally located configuration file. The simple-to-use Windows-based ZeroConfig configuration tool makes the whole process a breeze.

Total control

All LeTOS thin clients are fully manageable, using Lenovo’s Fusion LUDM management software. Every setting in the CloudDesktop OS operating system can be updated using tasks and templates – in addition to functions such as Wake-on-LAN, messaging and power-saving techniques.

Simple updates

LeTOS contains powerful but simple-to-use updating technology, allowing both OS and application updates to be delivered using LTM management software. All updates to the OS, as well as applications, are provided in the form of downloadable patches and plugins – hugely reducing bandwidth usage. The LeTOS Repository allows IT staff to download and install new versions of applications, as well as older legacy versions.

Active directory or LDAP

LeTOS offers administrators the unique capability to link LeTOS thin clients to a corporate Active Directory or LDAP server. This allows IT staff to control the complete thin client – from power-on and authentication to single sign-on to the virtualisation infrastructure.


The LeTOS operating system includes administrator and user logins, held totally separate and each individually configurable. A highly flexible connection manager can deliver multiple connectivity options to users from a range of in-built clients: Citrix Receiver, Citrix PNAgent, VMware Horizon (PCoIP/Blast), FreeRDP (RDS compatible), RDesktop (legacy RDP), X11, VNC and more.

HDX compliance

LeTOS is fully Citrix HDX-certified, passing all the standards required by corporate enterprises, delivering stunning graphics performance from the Web, Flash and Skype for Business.

USB flexibility

Equipped with Fabulatech USB device support, LeTOS delivers the ability to use a vast range of USB devices within virtual desktop sessions. Additional support for Eltima USB Sharing over Network can also be obtained via the LeTOS Repository or technical support.

Imprivata OneSign

LeTOS is available with an optional security plugin from Imprivata, enhancing login authentication and security. Imprivata is a world-leading authentication technology