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// Other services

Port 4683: Spike Clipboard Service

Port 4683 is assigned by IANA to spike (Spike Clipboard Service).

4683

How spike works

Other services
client:4683spikeresponse client:4683spikeresponse

The client sends a request to port 4683 and the spike 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 4683 dangerous?

We have no specific security note for port 4683. 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 4683

ServicePortTransportDescriptionReferenceUpdated
spike 4683 TCP, UDP Spike Clipboard Service - 2005-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 4683, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4683'      # process listening on 4683
sudo lsof -nP -i :4683

macOS

sudo lsof -nP -i :4683

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4683 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4683
netstat -ano | findstr :4683

From another machine

nmap -p 4683 -sV <host>
sudo nmap -sU -p 4683 <host>
nc -zv <host> 4683

Block it in the firewall

sudo ufw deny 4683/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4683" -Direction Inbound -LocalPort 4683 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4683 used for?

Port 4683 is assigned by IANA to spike (Spike Clipboard Service).

Is port 4683 TCP or UDP?

Port 4683 is registered for TCP and UDP.

Is it safe to open port 4683?

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 4683 is open?

On Linux run "ss -ltnup 'sport = :4683'", on macOS "lsof -nP -i :4683", and on Windows "netstat -ano | findstr :4683" to see the local process. From another machine, "nmap -p 4683 <host>" shows whether it is reachable.

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