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// Other services

Port 1771: vaultbase

Port 1771 is assigned by IANA to vaultbase (vaultbase).

1771

How vaultbase works

Other services
client:1771vaultbaseresponse client:1771vaultbaseresponse

The client sends a request to port 1771 and the vaultbase 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 1771 dangerous?

We have no specific security note for port 1771. 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 1771

ServicePortTransportDescriptionReferenceUpdated
vaultbase 1771 TCP, UDP vaultbase - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1771, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1771'      # process listening on 1771
sudo lsof -nP -i :1771

macOS

sudo lsof -nP -i :1771

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1771 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1771
netstat -ano | findstr :1771

From another machine

nmap -p 1771 -sV <host>
sudo nmap -sU -p 1771 <host>
nc -zv <host> 1771

Block it in the firewall

sudo ufw deny 1771/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1771" -Direction Inbound -LocalPort 1771 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1771 used for?

Port 1771 is assigned by IANA to vaultbase (vaultbase).

Is port 1771 TCP or UDP?

Port 1771 is registered for TCP and UDP.

Is it safe to open port 1771?

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 1771 is open?

On Linux run "ss -ltnup 'sport = :1771'", on macOS "lsof -nP -i :1771", and on Windows "netstat -ano | findstr :1771" to see the local process. From another machine, "nmap -p 1771 <host>" shows whether it is reachable.

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