CyberHunter
Local dataset, no network
// Other services

Port 1123: Murray

Port 1123 is assigned by IANA to murray (Murray).

1123

How murray works

Other services
client:1123murrayresponse client:1123murrayresponse

The client sends a request to port 1123 and the murray 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 1123 dangerous?

We have no specific security note for port 1123. 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 1123

ServicePortTransportDescriptionReferenceUpdated
murray 1123 TCP, UDP Murray - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1123, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1123'      # process listening on 1123
sudo lsof -nP -i :1123

macOS

sudo lsof -nP -i :1123

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1123 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1123
netstat -ano | findstr :1123

From another machine

nmap -p 1123 -sV <host>
sudo nmap -sU -p 1123 <host>
nc -zv <host> 1123

Block it in the firewall

sudo ufw deny 1123/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1123" -Direction Inbound -LocalPort 1123 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1123 used for?

Port 1123 is assigned by IANA to murray (Murray).

Is port 1123 TCP or UDP?

Port 1123 is registered for TCP and UDP.

Is it safe to open port 1123?

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 1123 is open?

On Linux run "ss -ltnup 'sport = :1123'", on macOS "lsof -nP -i :1123", and on Windows "netstat -ano | findstr :1123" to see the local process. From another machine, "nmap -p 1123 <host>" shows whether it is reachable.

05 Related
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