CyberHunter
LinkedIn profile - Bastien Cordier Email: contact@bastiencordier.pro
// Other services

Port 2256: PCC MFP

Port 2256 is assigned by IANA to pcc-mfp (PCC MFP).

2256

How pcc-mfp works

Other services
client:2256pcc-mfpresponse client:2256pcc-mfpresponse

The client sends a request to port 2256 and the pcc-mfp 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 2256 dangerous?

We have no specific security note for port 2256. 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 2256

ServicePortTransportDescriptionReferenceUpdated
pcc-mfp 2256 TCP, UDP PCC MFP - 2005-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 2256, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2256'      # process listening on 2256
sudo lsof -nP -i :2256

macOS

sudo lsof -nP -i :2256

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2256 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2256
netstat -ano | findstr :2256

From another machine

nmap -p 2256 -sV <host>
sudo nmap -sU -p 2256 <host>
nc -zv <host> 2256

Block it in the firewall

sudo ufw deny 2256/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2256" -Direction Inbound -LocalPort 2256 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2256 used for?

Port 2256 is assigned by IANA to pcc-mfp (PCC MFP).

Is port 2256 TCP or UDP?

Port 2256 is registered for TCP and UDP.

Is it safe to open port 2256?

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 2256 is open?

On Linux run "ss -ltnup 'sport = :2256'", on macOS "lsof -nP -i :2256", and on Windows "netstat -ano | findstr :2256" to see the local process. From another machine, "nmap -p 2256 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

Latest vulnerability news

All news