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// Other services

Port 2017:

Port 2017 is assigned by IANA to bootclient (), cypress-stat ().

2017

How bootclient works

Other services
client:2017bootclientresponse client:2017bootclientresponse

The client sends a request to port 2017 and the bootclient service answers.

Transport
UDP · TCP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned2 registered services
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 2017 dangerous?

We have no specific security note for port 2017. 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 2017

ServicePortTransportDescriptionReferenceUpdated
bootclient 2017 UDP - -
cypress-stat 2017 TCP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2017, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2017'      # process listening on 2017
sudo lsof -nP -i :2017

macOS

sudo lsof -nP -i :2017

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2017 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2017
netstat -ano | findstr :2017

From another machine

nmap -p 2017 -sV <host>
sudo nmap -sU -p 2017 <host>
nc -zv <host> 2017

Block it in the firewall

sudo ufw deny 2017/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2017" -Direction Inbound -LocalPort 2017 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2017 used for?

Port 2017 is assigned by IANA to bootclient (), cypress-stat ().

Is port 2017 TCP or UDP?

Port 2017 is registered for UDP and TCP.

Is it safe to open port 2017?

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 2017 is open?

On Linux run "ss -ltnup 'sport = :2017'", on macOS "lsof -nP -i :2017", and on Windows "netstat -ano | findstr :2017" to see the local process. From another machine, "nmap -p 2017 <host>" shows whether it is reachable.

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