CyberHunter
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// Other services

Port 1896: b-novative license server

Port 1896 is assigned by IANA to b-novative-ls (b-novative license server).

1896

How b-novative-ls works

Other services
client:1896b-novative-lsresponse client:1896b-novative-lsresponse

The client sends a request to port 1896 and the b-novative-ls 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 1896 dangerous?

We have no specific security note for port 1896. 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 1896

ServicePortTransportDescriptionReferenceUpdated
b-novative-ls 1896 TCP, UDP b-novative license server - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1896, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1896'      # process listening on 1896
sudo lsof -nP -i :1896

macOS

sudo lsof -nP -i :1896

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1896 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1896
netstat -ano | findstr :1896

From another machine

nmap -p 1896 -sV <host>
sudo nmap -sU -p 1896 <host>
nc -zv <host> 1896

Block it in the firewall

sudo ufw deny 1896/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1896" -Direction Inbound -LocalPort 1896 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1896 used for?

Port 1896 is assigned by IANA to b-novative-ls (b-novative license server).

Is port 1896 TCP or UDP?

Port 1896 is registered for TCP and UDP.

Is it safe to open port 1896?

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 1896 is open?

On Linux run "ss -ltnup 'sport = :1896'", on macOS "lsof -nP -i :1896", and on Windows "netstat -ano | findstr :1896" to see the local process. From another machine, "nmap -p 1896 <host>" shows whether it is reachable.

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