The project includes a set of actions aimed at modernising and upgrading the network and computer infrastructure of the Port Authority/Hellenic Coast Guard (LS-ELAKT), aiming at achieving high levels of speed, security and reliability when accessing users (internal and external) to the provided digital services. At the same time, the project aims to significantly enhance the security and integrity of digital data, as well as the protection of systems against errors of users and potential malicious actions, substantially improving the availability of digital services.In this context, the existing active and passive network equipment will be replaced in the 3 buildings of the Central Service of the Ministry of Shipping and Island Policy (YNANP), will be upgraded the infrastructure, the infrastructure (mechanical, supportive) of the infrastructure, and the infrastructure will be upgraded.