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// Other services

Port 2528: NCR CCL

Port 2528 is assigned by IANA to ncr_ccl (NCR CCL), ncr-ccl (NCR CCL IANA assigned this well-formed service name as a replacement for "ncr_ccl".).

2528

How ncr_ccl works

Other services
client:2528ncr_cclresponse client:2528ncr_cclresponse

The client sends a request to port 2528 and the ncr_ccl service answers.

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
Other services
01 Security

Is port 2528 dangerous?

We have no specific security note for port 2528. 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 2528

ServicePortTransportDescriptionReferenceUpdated
ncr_ccl 2528 TCP, UDP NCR CCL - -
ncr-ccl 2528 TCP, UDP NCR CCL IANA assigned this well-formed service name as a replacement for "ncr_ccl". - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2528, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2528'      # process listening on 2528
sudo lsof -nP -i :2528

macOS

sudo lsof -nP -i :2528

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2528 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2528
netstat -ano | findstr :2528

From another machine

nmap -p 2528 -sV <host>
sudo nmap -sU -p 2528 <host>
nc -zv <host> 2528

Block it in the firewall

sudo ufw deny 2528/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2528" -Direction Inbound -LocalPort 2528 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2528 used for?

Port 2528 is assigned by IANA to ncr_ccl (NCR CCL), ncr-ccl (NCR CCL IANA assigned this well-formed service name as a replacement for "ncr_ccl".).

Is port 2528 TCP or UDP?

Port 2528 is registered for TCP and UDP.

Is it safe to open port 2528?

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 2528 is open?

On Linux run "ss -ltnup 'sport = :2528'", on macOS "lsof -nP -i :2528", and on Windows "netstat -ano | findstr :2528" to see the local process. From another machine, "nmap -p 2528 <host>" shows whether it is reachable.

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