The VIT-400 is a Fast Ethernet single-direction network to network fibeoptic coupled isolation device - Network to Network Diode, desigen and approved for Critical Infrastructure Protection (CIP) connectivity.

Composed of a pair of single-direction network diodes (VIT-42TX/RX like), internally connected by a single fiber optic cable and having two separated power supplies, the VIT-400 provides complet protection, isolation and security for unidirectional transparent data transfer between two networks.

Separating between the pure HW network to network diode and the unidirectional VectorIT SW application, installed on the networks endpoint servers, assures unbreakable single-direction solution for protecting the networks against intrusion and leakage.

VectorIT software application facilitates unidirectional transfer of certain TCP-based protocols as well as raw files over standard Ethernet interfaces with utilization of up-to full wire speed.
Currently supported protocols are FTP, SMTP TCP and raw files. The software is dedicated to and employs only unidirectional data flow over single or bidirectional link, but has otherwise no relation to data security services.

The VIT-400 includes a uniqe link verification function in which the link of the incoming endpoint (receiving server) will drop if there is any problem with the end to end link continuity up-to the outgoing endpopint (transmitting server). This is a powerfull HW management feature aspecially for single direction applications.