CyberHunter
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// Other services

Port 3155: JpegMpeg Port

Port 3155 is assigned by IANA to jpegmpeg (JpegMpeg Port).

3155

How jpegmpeg works

Other services
client:3155jpegmpegresponse client:3155jpegmpegresponse

The client sends a request to port 3155 and the jpegmpeg 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 3155 dangerous?

We have no specific security note for port 3155. 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 3155

ServicePortTransportDescriptionReferenceUpdated
jpegmpeg 3155 TCP, UDP JpegMpeg Port - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3155, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3155'      # process listening on 3155
sudo lsof -nP -i :3155

macOS

sudo lsof -nP -i :3155

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3155 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3155
netstat -ano | findstr :3155

From another machine

nmap -p 3155 -sV <host>
sudo nmap -sU -p 3155 <host>
nc -zv <host> 3155

Block it in the firewall

sudo ufw deny 3155/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3155" -Direction Inbound -LocalPort 3155 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3155 used for?

Port 3155 is assigned by IANA to jpegmpeg (JpegMpeg Port).

Is port 3155 TCP or UDP?

Port 3155 is registered for TCP and UDP.

Is it safe to open port 3155?

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 3155 is open?

On Linux run "ss -ltnup 'sport = :3155'", on macOS "lsof -nP -i :3155", and on Windows "netstat -ano | findstr :3155" to see the local process. From another machine, "nmap -p 3155 <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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