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

Port 2339: 3Com WebView

Port 2339 is assigned by IANA to 3com-webview (3Com WebView).

2339

How 3com-webview works

Other services
client:23393com-webviewresponse client:23393com-webviewresponse

The client sends a request to port 2339 and the 3com-webview 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 2339 dangerous?

We have no specific security note for port 2339. 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 2339

ServicePortTransportDescriptionReferenceUpdated
3com-webview 2339 TCP, UDP 3Com WebView - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2339, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2339'      # process listening on 2339
sudo lsof -nP -i :2339

macOS

sudo lsof -nP -i :2339

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2339 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2339
netstat -ano | findstr :2339

From another machine

nmap -p 2339 -sV <host>
sudo nmap -sU -p 2339 <host>
nc -zv <host> 2339

Block it in the firewall

sudo ufw deny 2339/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2339" -Direction Inbound -LocalPort 2339 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2339 used for?

Port 2339 is assigned by IANA to 3com-webview (3Com WebView).

Is port 2339 TCP or UDP?

Port 2339 is registered for TCP and UDP.

Is it safe to open port 2339?

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 2339 is open?

On Linux run "ss -ltnup 'sport = :2339'", on macOS "lsof -nP -i :2339", and on Windows "netstat -ano | findstr :2339" to see the local process. From another machine, "nmap -p 2339 <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