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// DevOps, cloud & containers

Port 27016: Cloud hosting environment network

Port 27016 is assigned by IANA to chlenix (Cloud hosting environment network).

27016

How chlenix works

DevOps, cloud & containers
adminhostchlenix adminhostchlenix

Commands sent to port 27016 create and control containers or cluster resources on the host.

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
DevOps, cloud & containers
01 Security

Is port 27016 dangerous?

We have no specific security note for port 27016. Its risk depends on the program actually listening on it. General advice for devops, cloud & containers services:

  • Container and orchestration APIs give full control of hosts: require mutual TLS and RBAC.
  • Never expose them to the Internet.
  • Rotate tokens and certificates and audit who has access.
02 Registry

IANA registry entries for port 27016

ServicePortTransportDescriptionReferenceUpdated
chlenix 27016 TCP Cloud hosting environment network - 2024-09-23
-27016-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 27016, and is it reachable?

Linux

sudo ss -ltnup 'sport = :27016'      # process listening on 27016
sudo lsof -nP -i :27016

macOS

sudo lsof -nP -i :27016

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 27016 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 27016
netstat -ano | findstr :27016

From another machine

nmap -p 27016 -sV <host>
nc -zv <host> 27016

Block it in the firewall

sudo ufw deny 27016/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 27016" -Direction Inbound -LocalPort 27016 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 27016 used for?

Port 27016 is assigned by IANA to chlenix (Cloud hosting environment network).

Is port 27016 TCP or UDP?

Port 27016 is registered for TCP.

Is it safe to open port 27016?

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. Container and orchestration APIs give full control of hosts: require mutual TLS and RBAC.

How do I check if port 27016 is open?

On Linux run "ss -ltnup 'sport = :27016'", on macOS "lsof -nP -i :27016", and on Windows "netstat -ano | findstr :27016" to see the local process. From another machine, "nmap -p 27016 <host>" shows whether it is reachable.

05 Related
:2375 Docker API (HTTP) tcp · critical risk :2376 Docker API (TLS) tcp · high risk :6443 Kubernetes API tcp · udp · high risk :10250 Kubelet API tcp · critical risk :2379 etcd tcp · critical risk :8500 Consul tcp · udp · high risk :4505 SaltStack tcp · critical risk :9000 PHP-FPM / SonarQube / Portainer tcp · udp · high risk

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