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// Other services

Port 2187: Sepehr System Management Control

Port 2187 is assigned by IANA to ssmc (Sepehr System Management Control), ssmd (Sepehr System Management Data).

2187

How ssmc works

Other services
client:2187ssmcresponse client:2187ssmcresponse

The client sends a request to port 2187 and the ssmc service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned2 registered services
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 2187 dangerous?

We have no specific security note for port 2187. 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 2187

ServicePortTransportDescriptionReferenceUpdated
ssmc 2187 TCP Sepehr System Management Control - -
ssmd 2187 UDP Sepehr System Management Data - 2008-12-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 2187, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2187'      # process listening on 2187
sudo lsof -nP -i :2187

macOS

sudo lsof -nP -i :2187

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2187 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2187
netstat -ano | findstr :2187

From another machine

nmap -p 2187 -sV <host>
sudo nmap -sU -p 2187 <host>
nc -zv <host> 2187

Block it in the firewall

sudo ufw deny 2187/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2187" -Direction Inbound -LocalPort 2187 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2187 used for?

Port 2187 is assigned by IANA to ssmc (Sepehr System Management Control), ssmd (Sepehr System Management Data).

Is port 2187 TCP or UDP?

Port 2187 is registered for TCP and UDP.

Is it safe to open port 2187?

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 2187 is open?

On Linux run "ss -ltnup 'sport = :2187'", on macOS "lsof -nP -i :2187", and on Windows "netstat -ano | findstr :2187" to see the local process. From another machine, "nmap -p 2187 <host>" shows whether it is reachable.

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