CyberHunter
Local dataset, no network
// Other services

Port 2249: RISO File Manager Protocol

Port 2249 is assigned by IANA to rfmp (RISO File Manager Protocol).

2249

How rfmp works

Other services
client:2249rfmpresponse client:2249rfmpresponse

The client sends a request to port 2249 and the rfmp 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 2249 dangerous?

We have no specific security note for port 2249. 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 2249

ServicePortTransportDescriptionReferenceUpdated
rfmp 2249 TCP, UDP RISO File Manager Protocol - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2249, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2249'      # process listening on 2249
sudo lsof -nP -i :2249

macOS

sudo lsof -nP -i :2249

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2249 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2249
netstat -ano | findstr :2249

From another machine

nmap -p 2249 -sV <host>
sudo nmap -sU -p 2249 <host>
nc -zv <host> 2249

Block it in the firewall

sudo ufw deny 2249/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2249" -Direction Inbound -LocalPort 2249 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2249 used for?

Port 2249 is assigned by IANA to rfmp (RISO File Manager Protocol).

Is port 2249 TCP or UDP?

Port 2249 is registered for TCP and UDP.

Is it safe to open port 2249?

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 2249 is open?

On Linux run "ss -ltnup 'sport = :2249'", on macOS "lsof -nP -i :2249", and on Windows "netstat -ano | findstr :2249" to see the local process. From another machine, "nmap -p 2249 <host>" shows whether it is reachable.

05 Related
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