CyberHunter
Local dataset, no network
// Other services

Port 3433: OPNET Service Management Platform

Port 3433 is assigned by IANA to opnet-smp (OPNET Service Management Platform).

3433

How opnet-smp works

Other services
client:3433opnet-smpresponse client:3433opnet-smpresponse

The client sends a request to port 3433 and the opnet-smp 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 3433 dangerous?

We have no specific security note for port 3433. 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 3433

ServicePortTransportDescriptionReferenceUpdated
opnet-smp 3433 TCP, UDP OPNET Service Management Platform - 2011-09-21

// source: IANA service name and port number registry

03 Check it

Which program uses port 3433, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3433'      # process listening on 3433
sudo lsof -nP -i :3433

macOS

sudo lsof -nP -i :3433

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3433 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3433
netstat -ano | findstr :3433

From another machine

nmap -p 3433 -sV <host>
sudo nmap -sU -p 3433 <host>
nc -zv <host> 3433

Block it in the firewall

sudo ufw deny 3433/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3433" -Direction Inbound -LocalPort 3433 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3433 used for?

Port 3433 is assigned by IANA to opnet-smp (OPNET Service Management Platform).

Is port 3433 TCP or UDP?

Port 3433 is registered for TCP and UDP.

Is it safe to open port 3433?

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 3433 is open?

On Linux run "ss -ltnup 'sport = :3433'", on macOS "lsof -nP -i :3433", and on Windows "netstat -ano | findstr :3433" to see the local process. From another machine, "nmap -p 3433 <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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