CyberHunter
Local dataset, no network
// Other services

Port 3243: Timelot Port

Port 3243 is assigned by IANA to timelot (Timelot Port).

3243

How timelot works

Other services
client:3243timelotresponse client:3243timelotresponse

The client sends a request to port 3243 and the timelot 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 3243 dangerous?

We have no specific security note for port 3243. 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 3243

ServicePortTransportDescriptionReferenceUpdated
timelot 3243 TCP, UDP Timelot Port - 2002-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 3243, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3243'      # process listening on 3243
sudo lsof -nP -i :3243

macOS

sudo lsof -nP -i :3243

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3243 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3243
netstat -ano | findstr :3243

From another machine

nmap -p 3243 -sV <host>
sudo nmap -sU -p 3243 <host>
nc -zv <host> 3243

Block it in the firewall

sudo ufw deny 3243/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3243" -Direction Inbound -LocalPort 3243 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3243 used for?

Port 3243 is assigned by IANA to timelot (Timelot Port).

Is port 3243 TCP or UDP?

Port 3243 is registered for TCP and UDP.

Is it safe to open port 3243?

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 3243 is open?

On Linux run "ss -ltnup 'sport = :3243'", on macOS "lsof -nP -i :3243", and on Windows "netstat -ano | findstr :3243" to see the local process. From another machine, "nmap -p 3243 <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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