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// Other services

Port 2296: Theta License Manager (Rainbow)

Port 2296 is assigned by IANA to theta-lm (Theta License Manager (Rainbow)).

2296

How theta-lm works

Other services
client:2296theta-lmresponse client:2296theta-lmresponse

The client sends a request to port 2296 and the theta-lm 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 2296 dangerous?

We have no specific security note for port 2296. 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 2296

ServicePortTransportDescriptionReferenceUpdated
theta-lm 2296 TCP, UDP Theta License Manager (Rainbow) - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2296, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2296'      # process listening on 2296
sudo lsof -nP -i :2296

macOS

sudo lsof -nP -i :2296

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2296 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2296
netstat -ano | findstr :2296

From another machine

nmap -p 2296 -sV <host>
sudo nmap -sU -p 2296 <host>
nc -zv <host> 2296

Block it in the firewall

sudo ufw deny 2296/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2296" -Direction Inbound -LocalPort 2296 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2296 used for?

Port 2296 is assigned by IANA to theta-lm (Theta License Manager (Rainbow)).

Is port 2296 TCP or UDP?

Port 2296 is registered for TCP and UDP.

Is it safe to open port 2296?

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 2296 is open?

On Linux run "ss -ltnup 'sport = :2296'", on macOS "lsof -nP -i :2296", and on Windows "netstat -ano | findstr :2296" to see the local process. From another machine, "nmap -p 2296 <host>" shows whether it is reachable.

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