To ensure Signage Manager can discover and control players over a Local Area Network (LAN), please ensure that TCP 80, 8080, 443, and UDP 1900 are opened in your firewall settings.


Port Configuration Table:

Port

TCP

UDP

Description

80

TCP


Hypertext Transfer Protocol (HTTP), main communication port with legacy players (e.g. NMP-302w, NMP580-W, EP1031, EP1032, EP1042T, CDM4300R, CDM4900R, CDM5500...).

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 players on the network.


Note:

  • Ensure that both the management PC and the players are on the same subnet, or verify that the router allows UDP broadcast traffic across segments.

  • If connection issues persist, try temporarily disabling the PC's firewall for testing.