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// Other services

Port 2617: Clinical Context Managers

Port 2617 is assigned by IANA to cmadmin (Clinical Context Managers).

2617

How cmadmin works

Other services
client:2617cmadminresponse client:2617cmadminresponse

The client sends a request to port 2617 and the cmadmin 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 2617 dangerous?

We have no specific security note for port 2617. 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 2617

ServicePortTransportDescriptionReferenceUpdated
cmadmin 2617 TCP, UDP Clinical Context Managers - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2617, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2617'      # process listening on 2617
sudo lsof -nP -i :2617

macOS

sudo lsof -nP -i :2617

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2617 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2617
netstat -ano | findstr :2617

From another machine

nmap -p 2617 -sV <host>
sudo nmap -sU -p 2617 <host>
nc -zv <host> 2617

Block it in the firewall

sudo ufw deny 2617/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2617" -Direction Inbound -LocalPort 2617 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2617 used for?

Port 2617 is assigned by IANA to cmadmin (Clinical Context Managers).

Is port 2617 TCP or UDP?

Port 2617 is registered for TCP and UDP.

Is it safe to open port 2617?

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 2617 is open?

On Linux run "ss -ltnup 'sport = :2617'", on macOS "lsof -nP -i :2617", and on Windows "netstat -ano | findstr :2617" to see the local process. From another machine, "nmap -p 2617 <host>" shows whether it is reachable.

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