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// Other services

Port 1868: VizibleBrowser

Port 1868 is assigned by IANA to viziblebrowser (VizibleBrowser).

1868

How viziblebrowser works

Other services
client:1868viziblebrowserresponse client:1868viziblebrowserresponse

The client sends a request to port 1868 and the viziblebrowser 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 1868 dangerous?

We have no specific security note for port 1868. 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 1868

ServicePortTransportDescriptionReferenceUpdated
viziblebrowser 1868 TCP, UDP VizibleBrowser - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1868, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1868'      # process listening on 1868
sudo lsof -nP -i :1868

macOS

sudo lsof -nP -i :1868

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1868 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1868
netstat -ano | findstr :1868

From another machine

nmap -p 1868 -sV <host>
sudo nmap -sU -p 1868 <host>
nc -zv <host> 1868

Block it in the firewall

sudo ufw deny 1868/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1868" -Direction Inbound -LocalPort 1868 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1868 used for?

Port 1868 is assigned by IANA to viziblebrowser (VizibleBrowser).

Is port 1868 TCP or UDP?

Port 1868 is registered for TCP and UDP.

Is it safe to open port 1868?

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 1868 is open?

On Linux run "ss -ltnup 'sport = :1868'", on macOS "lsof -nP -i :1868", and on Windows "netstat -ano | findstr :1868" to see the local process. From another machine, "nmap -p 1868 <host>" shows whether it is reachable.

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