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// Remote access

Port 4914: Bones Remote Control

Port 4914 is assigned by IANA to bones (Bones Remote Control).

4914

How bones works

Remote access
terminal:4914bones terminal:4914bones

The client opens a session to port 4914: each command typed is sent to the server, which runs it and returns the output.

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
Remote access
01 Security

Is port 4914 dangerous?

We have no specific security note for port 4914. Its risk depends on the program actually listening on it. General advice for remote access services:

  • Do not expose remote administration directly: use a VPN or a zero-trust access proxy.
  • Require MFA or key-based authentication and lock out brute-force attempts.
  • Log every login and alert on new source addresses.
02 Registry

IANA registry entries for port 4914

ServicePortTransportDescriptionReferenceUpdated
bones 4914 TCP, UDP Bones Remote Control - 2008-06-18

// source: IANA service name and port number registry

03 Check it

Which program uses port 4914, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4914'      # process listening on 4914
sudo lsof -nP -i :4914

macOS

sudo lsof -nP -i :4914

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4914 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4914
netstat -ano | findstr :4914

From another machine

nmap -p 4914 -sV <host>
sudo nmap -sU -p 4914 <host>
nc -zv <host> 4914

Block it in the firewall

sudo ufw deny 4914/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4914" -Direction Inbound -LocalPort 4914 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4914 used for?

Port 4914 is assigned by IANA to bones (Bones Remote Control).

Is port 4914 TCP or UDP?

Port 4914 is registered for TCP and UDP.

Is it safe to open port 4914?

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. Do not expose remote administration directly: use a VPN or a zero-trust access proxy.

How do I check if port 4914 is open?

On Linux run "ss -ltnup 'sport = :4914'", on macOS "lsof -nP -i :4914", and on Windows "netstat -ano | findstr :4914" to see the local process. From another machine, "nmap -p 4914 <host>" shows whether it is reachable.

05 Related
:22 SSH tcp · udp · sctp · moderate risk :3389 RDP tcp · udp · critical risk :23 Telnet tcp · udp · critical risk :5900 VNC tcp · udp · critical risk :5985 WinRM (HTTP) tcp · udp · high risk :5986 WinRM (HTTPS) tcp · udp · high risk :10000 Webmin tcp · udp · high risk :89 SU/MIT Telnet Gateway tcp · udp

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