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// Other services

Port 8471: PIM over Reliable Transport

Port 8471 is assigned by IANA to pim-port (PIM over Reliable Transport).

8471

How pim-port works

Other services
client:8471pim-portresponse client:8471pim-portresponse

The client sends a request to port 8471 and the pim-port service answers.

Transport
TCP · SCTP
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 8471 dangerous?

We have no specific security note for port 8471. 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 8471

ServicePortTransportDescriptionReferenceUpdated
pim-port 8471 TCP, SCTP PIM over Reliable Transport RFC 6559 2008-08-21
-8471-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 8471, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8471'      # process listening on 8471
sudo lsof -nP -i :8471

macOS

sudo lsof -nP -i :8471

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8471 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8471
netstat -ano | findstr :8471

From another machine

nmap -p 8471 -sV <host>
nc -zv <host> 8471

Block it in the firewall

sudo ufw deny 8471/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8471" -Direction Inbound -LocalPort 8471 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8471 used for?

Port 8471 is assigned by IANA to pim-port (PIM over Reliable Transport).

Is port 8471 TCP or UDP?

Port 8471 is registered for TCP and SCTP.

Is it safe to open port 8471?

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 8471 is open?

On Linux run "ss -ltnup 'sport = :8471'", on macOS "lsof -nP -i :8471", and on Windows "netstat -ano | findstr :8471" to see the local process. From another machine, "nmap -p 8471 <host>" shows whether it is reachable.

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