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// Other services

Port 1878: drmsmc

Port 1878 is assigned by IANA to drmsmc (drmsmc).

1878

How drmsmc works

Other services
client:1878drmsmcresponse client:1878drmsmcresponse

The client sends a request to port 1878 and the drmsmc service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 1878 dangerous?

We have no specific security note for port 1878. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 1878

ServicePortTransportDescriptionReferenceUpdated
drmsmc 1878 TCP, UDP drmsmc - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1878, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1878'      # process listening on 1878
sudo lsof -nP -i :1878

macOS

sudo lsof -nP -i :1878

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1878 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1878
netstat -ano | findstr :1878

From another machine

nmap -p 1878 -sV <host>
sudo nmap -sU -p 1878 <host>
nc -zv <host> 1878

Block it in the firewall

sudo ufw deny 1878/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1878" -Direction Inbound -LocalPort 1878 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1878 used for?

Port 1878 is assigned by IANA to drmsmc (drmsmc).

Is port 1878 TCP or UDP?

Port 1878 is registered for TCP and UDP.

Is it safe to open port 1878?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 1878 is open?

On Linux run "ss -ltnup 'sport = :1878'", on macOS "lsof -nP -i :1878", and on Windows "netstat -ano | findstr :1878" to see the local process. From another machine, "nmap -p 1878 <host>" shows whether it is reachable.

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