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// Web

Port 10543: MOS SOAP Default Port

Port 10543 is assigned by IANA to MOS-soap (MOS SOAP Default Port).

10543

How MOS-soap works

Web
browser:10543MOS-soap browser:10543MOS-soap

A browser sends an HTTP request to port 10543 and the MOS-soap server sends the page back.

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
Web
01 Security

Is port 10543 dangerous?

We have no specific security note for port 10543. Its risk depends on the program actually listening on it. General advice for web services:

  • Serve it over HTTPS only and check the HTTP security headers.
  • Keep admin consoles and development servers off the Internet.
  • Patch the application server and remove default credentials and sample apps.
02 Registry

IANA registry entries for port 10543

ServicePortTransportDescriptionReferenceUpdated
MOS-soap 10543 TCP, UDP MOS SOAP Default Port - 2007-09-17

// source: IANA service name and port number registry

03 Check it

Which program uses port 10543, and is it reachable?

Linux

sudo ss -ltnup 'sport = :10543'      # process listening on 10543
sudo lsof -nP -i :10543

macOS

sudo lsof -nP -i :10543

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 10543 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 10543
netstat -ano | findstr :10543

From another machine

nmap -p 10543 -sV <host>
sudo nmap -sU -p 10543 <host>
nc -zv <host> 10543

Block it in the firewall

sudo ufw deny 10543/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 10543" -Direction Inbound -LocalPort 10543 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 10543 used for?

Port 10543 is assigned by IANA to MOS-soap (MOS SOAP Default Port).

Is port 10543 TCP or UDP?

Port 10543 is registered for TCP and UDP.

Is it safe to open port 10543?

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. Serve it over HTTPS only and check the HTTP security headers.

How do I check if port 10543 is open?

On Linux run "ss -ltnup 'sport = :10543'", on macOS "lsof -nP -i :10543", and on Windows "netstat -ano | findstr :10543" to see the local process. From another machine, "nmap -p 10543 <host>" shows whether it is reachable.

05 Related
:443 HTTPS tcp · udp · sctp · low risk :80 HTTP tcp · udp · sctp · moderate risk :8080 HTTP alternate tcp · udp · high risk :8443 HTTPS alternate tcp · udp · moderate risk :3000 Dev servers / Grafana tcp · udp · moderate risk :5000 Flask / Docker registry / UPnP tcp · udp · moderate risk :8000 HTTP alternate (dev) tcp · udp · moderate risk :8888 Jupyter / HTTP alternate tcp · udp · high risk

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