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// Other services

Port 3114: CCM AutoDiscover

Port 3114 is assigned by IANA to ccmad (CCM AutoDiscover).

3114

How ccmad works

Other services
client:3114ccmadresponse client:3114ccmadresponse

The client sends a request to port 3114 and the ccmad 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 3114 dangerous?

We have no specific security note for port 3114. 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 3114

ServicePortTransportDescriptionReferenceUpdated
ccmad 3114 TCP, UDP CCM AutoDiscover - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3114, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3114'      # process listening on 3114
sudo lsof -nP -i :3114

macOS

sudo lsof -nP -i :3114

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3114 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3114
netstat -ano | findstr :3114

From another machine

nmap -p 3114 -sV <host>
sudo nmap -sU -p 3114 <host>
nc -zv <host> 3114

Block it in the firewall

sudo ufw deny 3114/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3114" -Direction Inbound -LocalPort 3114 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3114 used for?

Port 3114 is assigned by IANA to ccmad (CCM AutoDiscover).

Is port 3114 TCP or UDP?

Port 3114 is registered for TCP and UDP.

Is it safe to open port 3114?

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 3114 is open?

On Linux run "ss -ltnup 'sport = :3114'", on macOS "lsof -nP -i :3114", and on Windows "netstat -ano | findstr :3114" to see the local process. From another machine, "nmap -p 3114 <host>" shows whether it is reachable.

05 Related
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