CyberHunter
Local dataset, no network
// Remote access

Port 2654: Corel VNC Admin

Port 2654 is assigned by IANA to corel_vncadmin (Corel VNC Admin), corel-vncadmin (Corel VNC Admin IANA assigned this well-formed service name as a replacement for "corel_vncadmin".).

2654

How corel_vncadmin works

Remote access
terminal:2654corel_vncadmin terminal:2654corel_vncadmin

The client opens a session to port 2654: 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
Assigned2 registered services
Range
Registered (1024-49151)
Category
Remote access
01 Security

Is port 2654 dangerous?

We have no specific security note for port 2654. 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 2654

ServicePortTransportDescriptionReferenceUpdated
corel_vncadmin 2654 TCP, UDP Corel VNC Admin - -
corel-vncadmin 2654 TCP, UDP Corel VNC Admin IANA assigned this well-formed service name as a replacement for "corel_vncadmin". - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2654, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2654'      # process listening on 2654
sudo lsof -nP -i :2654

macOS

sudo lsof -nP -i :2654

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2654 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2654
netstat -ano | findstr :2654

From another machine

nmap -p 2654 -sV <host>
sudo nmap -sU -p 2654 <host>
nc -zv <host> 2654

Block it in the firewall

sudo ufw deny 2654/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2654" -Direction Inbound -LocalPort 2654 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2654 used for?

Port 2654 is assigned by IANA to corel_vncadmin (Corel VNC Admin), corel-vncadmin (Corel VNC Admin IANA assigned this well-formed service name as a replacement for "corel_vncadmin".).

Is port 2654 TCP or UDP?

Port 2654 is registered for TCP and UDP.

Is it safe to open port 2654?

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 2654 is open?

On Linux run "ss -ltnup 'sport = :2654'", on macOS "lsof -nP -i :2654", and on Windows "netstat -ano | findstr :2654" to see the local process. From another machine, "nmap -p 2654 <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

Latest vulnerability news

All news