Signage Manger communicates with media players through local area network (LAN). Some of network ports on media player must be enabled for software to properly working with player:


Port
TCP
UDP
Description
80
TCP
 Hypertext Transfer Protocol (HTTP), main communication port with legacy players (e.g. NMP-302-W/580).
8080
TCP
 HTTP alternate, main communication port with all players.
443
TCP
 For cloud update service through Google drive.
1900
 UDP
Microsoft Simple Service Discovery Protocol (SSDP), to discover ViewSonic NMP players and CDM media player on the network.