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// Web

Port 5841: Z-firm ShipRush interface for web access and bidirectional data

Port 5841 is assigned by IANA to shiprush-d-ch (Z-firm ShipRush interface for web access and bidirectional data).

5841

How shiprush-d-ch works

Web
browser:5841shiprush-d-ch browser:5841shiprush-d-ch

A browser sends an HTTP request to port 5841 and the shiprush-d-ch server sends the page back.

Transport
TCP
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 5841 dangerous?

We have no specific security note for port 5841. 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 5841

ServicePortTransportDescriptionReferenceUpdated
shiprush-d-ch 5841 TCP Z-firm ShipRush interface for web access and bidirectional data - 2014-08-22
-5841-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5841, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5841'      # process listening on 5841
sudo lsof -nP -i :5841

macOS

sudo lsof -nP -i :5841

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5841 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5841
netstat -ano | findstr :5841

From another machine

nmap -p 5841 -sV <host>
nc -zv <host> 5841

Block it in the firewall

sudo ufw deny 5841/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5841" -Direction Inbound -LocalPort 5841 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5841 used for?

Port 5841 is assigned by IANA to shiprush-d-ch (Z-firm ShipRush interface for web access and bidirectional data).

Is port 5841 TCP or UDP?

Port 5841 is registered for TCP.

Is it safe to open port 5841?

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 5841 is open?

On Linux run "ss -ltnup 'sport = :5841'", on macOS "lsof -nP -i :5841", and on Windows "netstat -ano | findstr :5841" to see the local process. From another machine, "nmap -p 5841 <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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