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// Other services

Port 282: Cable Port A/X

Port 282 is assigned by IANA to cableport-ax (Cable Port A/X).

282

How cableport-ax works

Other services
client:282cableport-axresponse client:282cableport-axresponse

The client sends a request to port 282 and the cableport-ax 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
Well-known (0-1023)
Category
Other services
01 Security

Is port 282 dangerous?

We have no specific security note for port 282. 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 282

ServicePortTransportDescriptionReferenceUpdated
cableport-ax 282 TCP, UDP Cable Port A/X - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 282, and is it reachable?

Linux

sudo ss -ltnup 'sport = :282'      # process listening on 282
sudo lsof -nP -i :282

macOS

sudo lsof -nP -i :282

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 282 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 282
netstat -ano | findstr :282

From another machine

nmap -p 282 -sV <host>
sudo nmap -sU -p 282 <host>
nc -zv <host> 282

Block it in the firewall

sudo ufw deny 282/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 282" -Direction Inbound -LocalPort 282 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 282 used for?

Port 282 is assigned by IANA to cableport-ax (Cable Port A/X).

Is port 282 TCP or UDP?

Port 282 is registered for TCP and UDP.

Is it safe to open port 282?

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 282 is open?

On Linux run "ss -ltnup 'sport = :282'", on macOS "lsof -nP -i :282", and on Windows "netstat -ano | findstr :282" to see the local process. From another machine, "nmap -p 282 <host>" shows whether it is reachable.

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