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// Other services

Port 1341: QuBES

Port 1341 is assigned by IANA to qubes (QuBES).

1341

How qubes works

Other services
client:1341qubesresponse client:1341qubesresponse

The client sends a request to port 1341 and the qubes 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 1341 dangerous?

We have no specific security note for port 1341. 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 1341

ServicePortTransportDescriptionReferenceUpdated
qubes 1341 TCP, UDP QuBES - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1341, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1341'      # process listening on 1341
sudo lsof -nP -i :1341

macOS

sudo lsof -nP -i :1341

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1341 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1341
netstat -ano | findstr :1341

From another machine

nmap -p 1341 -sV <host>
sudo nmap -sU -p 1341 <host>
nc -zv <host> 1341

Block it in the firewall

sudo ufw deny 1341/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1341" -Direction Inbound -LocalPort 1341 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1341 used for?

Port 1341 is assigned by IANA to qubes (QuBES).

Is port 1341 TCP or UDP?

Port 1341 is registered for TCP and UDP.

Is it safe to open port 1341?

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 1341 is open?

On Linux run "ss -ltnup 'sport = :1341'", on macOS "lsof -nP -i :1341", and on Windows "netstat -ano | findstr :1341" to see the local process. From another machine, "nmap -p 1341 <host>" shows whether it is reachable.

05 Related
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