A complement to the protection of systems is network security – both where the Internet comes into play as well as in inter-branch connections and in the LAN. Intrusion prevention systems, protection against DDoS attacks, transmission encryption, application firewalls, anti-virus protection at the network level, web-filtering and other UTM functionalities, as well as authorization of access to the local network (wired and WiFi) and access to network resources based on user roles are only some of the options of data protection in the network. SNP Poland recommends the implementation and maintenance of network environments based on products such as FortiNet, Juniper Networks, Cisco, Checkpoint, DELL EMC, HPE, Extreme Networks.