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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
Hypertext Transfer Protocol (HTTP), main communication port with legacy players (e.g. NMP-302w, NMP580-W, EP1031, EP1032, EP1042T, CDM4300R, CDM4900R, CDM5500...).
8080
HTTP alternate, main communication port with all players.
443
For cloud update service through Google drive.
1900
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.