An Implementation of Unidirectional Security Gateway to Guarantees Inter-VTS Exchange Service Security.

The IVEF service developed by IALA provides a common framework for the exchange of vessel traffic information. But, it does not have a secure transmission function. When one VTS center is hacked, other VTS centers connected to IVEF are also threatened with hacking. In order to cope with security threats targeting the VTS system, there is a growing trend to use unidirectional security gateway. In this paper, we propose to prevent a threat to hacking each VTS center by exchanging IVEF information using the unidirectional security gateway.