CyberHunter
Local dataset, no network
// Other services

Port 2780: LBC Control

Port 2780 is assigned by IANA to lbc-control (LBC Control).

2780

How lbc-control works

Other services
client:2780lbc-controlresponse client:2780lbc-controlresponse

The client sends a request to port 2780 and the lbc-control 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 2780 dangerous?

We have no specific security note for port 2780. 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 2780

ServicePortTransportDescriptionReferenceUpdated
lbc-control 2780 TCP, UDP LBC Control - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2780, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2780'      # process listening on 2780
sudo lsof -nP -i :2780

macOS

sudo lsof -nP -i :2780

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2780 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2780
netstat -ano | findstr :2780

From another machine

nmap -p 2780 -sV <host>
sudo nmap -sU -p 2780 <host>
nc -zv <host> 2780

Block it in the firewall

sudo ufw deny 2780/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2780" -Direction Inbound -LocalPort 2780 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2780 used for?

Port 2780 is assigned by IANA to lbc-control (LBC Control).

Is port 2780 TCP or UDP?

Port 2780 is registered for TCP and UDP.

Is it safe to open port 2780?

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 2780 is open?

On Linux run "ss -ltnup 'sport = :2780'", on macOS "lsof -nP -i :2780", and on Windows "netstat -ano | findstr :2780" to see the local process. From another machine, "nmap -p 2780 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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