CyberHunter
Local dataset, no network
// Other services

Port 6417: Faxcom Message Service

Port 6417 is assigned by IANA to faxcomservice (Faxcom Message Service).

6417

How faxcomservice works

Other services
client:6417faxcomserviceresponse client:6417faxcomserviceresponse

The client sends a request to port 6417 and the faxcomservice 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 6417 dangerous?

We have no specific security note for port 6417. 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 6417

ServicePortTransportDescriptionReferenceUpdated
faxcomservice 6417 TCP, UDP Faxcom Message Service - 2006-04

// source: IANA service name and port number registry

03 Check it

Which program uses port 6417, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6417'      # process listening on 6417
sudo lsof -nP -i :6417

macOS

sudo lsof -nP -i :6417

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6417 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6417
netstat -ano | findstr :6417

From another machine

nmap -p 6417 -sV <host>
sudo nmap -sU -p 6417 <host>
nc -zv <host> 6417

Block it in the firewall

sudo ufw deny 6417/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6417" -Direction Inbound -LocalPort 6417 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6417 used for?

Port 6417 is assigned by IANA to faxcomservice (Faxcom Message Service).

Is port 6417 TCP or UDP?

Port 6417 is registered for TCP and UDP.

Is it safe to open port 6417?

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 6417 is open?

On Linux run "ss -ltnup 'sport = :6417'", on macOS "lsof -nP -i :6417", and on Windows "netstat -ano | findstr :6417" to see the local process. From another machine, "nmap -p 6417 <host>" shows whether it is reachable.

05 Related
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