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// Other services

Port 1546: abbaccuray

Port 1546 is assigned by IANA to abbaccuray (abbaccuray).

1546

How abbaccuray works

Other services
client:1546abbaccurayresponse client:1546abbaccurayresponse

The client sends a request to port 1546 and the abbaccuray 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 1546 dangerous?

We have no specific security note for port 1546. 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 1546

ServicePortTransportDescriptionReferenceUpdated
abbaccuray 1546 TCP, UDP abbaccuray - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1546, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1546'      # process listening on 1546
sudo lsof -nP -i :1546

macOS

sudo lsof -nP -i :1546

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1546 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1546
netstat -ano | findstr :1546

From another machine

nmap -p 1546 -sV <host>
sudo nmap -sU -p 1546 <host>
nc -zv <host> 1546

Block it in the firewall

sudo ufw deny 1546/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1546" -Direction Inbound -LocalPort 1546 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1546 used for?

Port 1546 is assigned by IANA to abbaccuray (abbaccuray).

Is port 1546 TCP or UDP?

Port 1546 is registered for TCP and UDP.

Is it safe to open port 1546?

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 1546 is open?

On Linux run "ss -ltnup 'sport = :1546'", on macOS "lsof -nP -i :1546", and on Windows "netstat -ano | findstr :1546" to see the local process. From another machine, "nmap -p 1546 <host>" shows whether it is reachable.

05 Related
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