CyberHunter
Local dataset, no network
// Other services

Port 1473: OpenMath

Port 1473 is assigned by IANA to openmath (OpenMath).

1473

How openmath works

Other services
client:1473openmathresponse client:1473openmathresponse

The client sends a request to port 1473 and the openmath 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 1473 dangerous?

We have no specific security note for port 1473. 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 1473

ServicePortTransportDescriptionReferenceUpdated
openmath 1473 TCP, UDP OpenMath - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1473, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1473'      # process listening on 1473
sudo lsof -nP -i :1473

macOS

sudo lsof -nP -i :1473

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1473 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1473
netstat -ano | findstr :1473

From another machine

nmap -p 1473 -sV <host>
sudo nmap -sU -p 1473 <host>
nc -zv <host> 1473

Block it in the firewall

sudo ufw deny 1473/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1473" -Direction Inbound -LocalPort 1473 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1473 used for?

Port 1473 is assigned by IANA to openmath (OpenMath).

Is port 1473 TCP or UDP?

Port 1473 is registered for TCP and UDP.

Is it safe to open port 1473?

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 1473 is open?

On Linux run "ss -ltnup 'sport = :1473'", on macOS "lsof -nP -i :1473", and on Windows "netstat -ano | findstr :1473" to see the local process. From another machine, "nmap -p 1473 <host>" shows whether it is reachable.

05 Related
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