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// Other services

Port 25471: RNSAP User Adaptation for Iurh

Port 25471 is assigned by IANA to rna (RNSAP User Adaptation for Iurh).

25471

How rna works

Other services
client:25471rnaresponse client:25471rnaresponse

The client sends a request to port 25471 and the rna service answers.

Transport
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 25471 dangerous?

We have no specific security note for port 25471. 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 25471

ServicePortTransportDescriptionReferenceUpdated
rna 25471 SCTP RNSAP User Adaptation for Iurh - 2011-02-07

// source: IANA service name and port number registry

03 Check it

Which program uses port 25471, and is it reachable?

Linux

sudo ss -ltnup 'sport = :25471'      # process listening on 25471
sudo lsof -nP -i :25471

macOS

sudo lsof -nP -i :25471

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 25471 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 25471
netstat -ano | findstr :25471

From another machine

nmap -p 25471 -sV <host>
nc -zv <host> 25471

Block it in the firewall

sudo ufw deny 25471/sctp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 25471" -Direction Inbound -LocalPort 25471 -Protocol SCTP -Action Block  # Windows
04 FAQ
What is port 25471 used for?

Port 25471 is assigned by IANA to rna (RNSAP User Adaptation for Iurh).

Is port 25471 TCP or UDP?

Port 25471 is registered for SCTP.

Is it safe to open port 25471?

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 25471 is open?

On Linux run "ss -ltnup 'sport = :25471'", on macOS "lsof -nP -i :25471", and on Windows "netstat -ano | findstr :25471" to see the local process. From another machine, "nmap -p 25471 <host>" shows whether it is reachable.

05 Related
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