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// DevOps, cloud & containers

Port 8023: ARCATrust vault API

Port 8023 is assigned by IANA to arca-api (ARCATrust vault API).

8023

How arca-api works

DevOps, cloud & containers
adminhostarca-api adminhostarca-api

Commands sent to port 8023 create and control containers or cluster resources on the host.

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
DevOps, cloud & containers
01 Security

Is port 8023 dangerous?

We have no specific security note for port 8023. 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 8023

ServicePortTransportDescriptionReferenceUpdated
arca-api 8023 TCP, UDP ARCATrust vault API - 2018-07-05

// source: IANA service name and port number registry

03 Check it

Which program uses port 8023, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8023'      # process listening on 8023
sudo lsof -nP -i :8023

macOS

sudo lsof -nP -i :8023

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8023 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8023
netstat -ano | findstr :8023

From another machine

nmap -p 8023 -sV <host>
sudo nmap -sU -p 8023 <host>
nc -zv <host> 8023

Block it in the firewall

sudo ufw deny 8023/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8023" -Direction Inbound -LocalPort 8023 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8023 used for?

Port 8023 is assigned by IANA to arca-api (ARCATrust vault API).

Is port 8023 TCP or UDP?

Port 8023 is registered for TCP and UDP.

Is it safe to open port 8023?

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 8023 is open?

On Linux run "ss -ltnup 'sport = :8023'", on macOS "lsof -nP -i :8023", and on Windows "netstat -ano | findstr :8023" to see the local process. From another machine, "nmap -p 8023 <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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