CyberHunter
Local dataset, no network
// Other services

Port 5112: PeerMe Msg Cmd Service

Port 5112 is assigned by IANA to pm-cmdsvr (PeerMe Msg Cmd Service).

5112

How pm-cmdsvr works

Other services
client:5112pm-cmdsvrresponse client:5112pm-cmdsvrresponse

The client sends a request to port 5112 and the pm-cmdsvr 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 5112 dangerous?

We have no specific security note for port 5112. 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 5112

ServicePortTransportDescriptionReferenceUpdated
pm-cmdsvr 5112 TCP, UDP PeerMe Msg Cmd Service - 2005-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 5112, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5112'      # process listening on 5112
sudo lsof -nP -i :5112

macOS

sudo lsof -nP -i :5112

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5112 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5112
netstat -ano | findstr :5112

From another machine

nmap -p 5112 -sV <host>
sudo nmap -sU -p 5112 <host>
nc -zv <host> 5112

Block it in the firewall

sudo ufw deny 5112/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5112" -Direction Inbound -LocalPort 5112 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5112 used for?

Port 5112 is assigned by IANA to pm-cmdsvr (PeerMe Msg Cmd Service).

Is port 5112 TCP or UDP?

Port 5112 is registered for TCP and UDP.

Is it safe to open port 5112?

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 5112 is open?

On Linux run "ss -ltnup 'sport = :5112'", on macOS "lsof -nP -i :5112", and on Windows "netstat -ano | findstr :5112" to see the local process. From another machine, "nmap -p 5112 <host>" shows whether it is reachable.

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