CyberHunter
Local dataset, no network
// Other services

Port 32801: Multiple Listing Service Network

Port 32801 is assigned by IANA to mlsn (Multiple Listing Service Network).

32801

How mlsn works

Other services
client:32801mlsnresponse client:32801mlsnresponse

The client sends a request to port 32801 and the mlsn 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 32801 dangerous?

We have no specific security note for port 32801. 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 32801

ServicePortTransportDescriptionReferenceUpdated
mlsn 32801 TCP, UDP Multiple Listing Service Network - 2010-10-11

// source: IANA service name and port number registry

03 Check it

Which program uses port 32801, and is it reachable?

Linux

sudo ss -ltnup 'sport = :32801'      # process listening on 32801
sudo lsof -nP -i :32801

macOS

sudo lsof -nP -i :32801

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 32801 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 32801
netstat -ano | findstr :32801

From another machine

nmap -p 32801 -sV <host>
sudo nmap -sU -p 32801 <host>
nc -zv <host> 32801

Block it in the firewall

sudo ufw deny 32801/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 32801" -Direction Inbound -LocalPort 32801 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 32801 used for?

Port 32801 is assigned by IANA to mlsn (Multiple Listing Service Network).

Is port 32801 TCP or UDP?

Port 32801 is registered for TCP and UDP.

Is it safe to open port 32801?

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 32801 is open?

On Linux run "ss -ltnup 'sport = :32801'", on macOS "lsof -nP -i :32801", and on Windows "netstat -ano | findstr :32801" to see the local process. From another machine, "nmap -p 32801 <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

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