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// Other services

Port 4117: Hillr Connection Manager

Port 4117 is assigned by IANA to hillrserv (Hillr Connection Manager).

4117

How hillrserv works

Other services
client:4117hillrservresponse client:4117hillrservresponse

The client sends a request to port 4117 and the hillrserv 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 4117 dangerous?

We have no specific security note for port 4117. 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 4117

ServicePortTransportDescriptionReferenceUpdated
hillrserv 4117 TCP, UDP Hillr Connection Manager - 2008-05-22

// source: IANA service name and port number registry

03 Check it

Which program uses port 4117, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4117'      # process listening on 4117
sudo lsof -nP -i :4117

macOS

sudo lsof -nP -i :4117

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4117 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4117
netstat -ano | findstr :4117

From another machine

nmap -p 4117 -sV <host>
sudo nmap -sU -p 4117 <host>
nc -zv <host> 4117

Block it in the firewall

sudo ufw deny 4117/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4117" -Direction Inbound -LocalPort 4117 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4117 used for?

Port 4117 is assigned by IANA to hillrserv (Hillr Connection Manager).

Is port 4117 TCP or UDP?

Port 4117 is registered for TCP and UDP.

Is it safe to open port 4117?

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 4117 is open?

On Linux run "ss -ltnup 'sport = :4117'", on macOS "lsof -nP -i :4117", and on Windows "netstat -ano | findstr :4117" to see the local process. From another machine, "nmap -p 4117 <host>" shows whether it is reachable.

05 Related
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