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// Other services

Port 2766: Compaq SCP

Port 2766 is assigned by IANA to compaq-scp (Compaq SCP).

2766

How compaq-scp works

Other services
client:2766compaq-scpresponse client:2766compaq-scpresponse

The client sends a request to port 2766 and the compaq-scp 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 2766 dangerous?

We have no specific security note for port 2766. 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 2766

ServicePortTransportDescriptionReferenceUpdated
compaq-scp 2766 TCP, UDP Compaq SCP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2766, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2766'      # process listening on 2766
sudo lsof -nP -i :2766

macOS

sudo lsof -nP -i :2766

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2766 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2766
netstat -ano | findstr :2766

From another machine

nmap -p 2766 -sV <host>
sudo nmap -sU -p 2766 <host>
nc -zv <host> 2766

Block it in the firewall

sudo ufw deny 2766/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2766" -Direction Inbound -LocalPort 2766 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2766 used for?

Port 2766 is assigned by IANA to compaq-scp (Compaq SCP).

Is port 2766 TCP or UDP?

Port 2766 is registered for TCP and UDP.

Is it safe to open port 2766?

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 2766 is open?

On Linux run "ss -ltnup 'sport = :2766'", on macOS "lsof -nP -i :2766", and on Windows "netstat -ano | findstr :2766" to see the local process. From another machine, "nmap -p 2766 <host>" shows whether it is reachable.

05 Related
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