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// DevOps, cloud & containers

Port 8473: Virtual Point to Point

Port 8473 is assigned by IANA to vp2p (Virtual Point to Point).

8473

How vp2p works

DevOps, cloud & containers
adminhostvp2p adminhostvp2p

Commands sent to port 8473 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 8473 dangerous?

We have no specific security note for port 8473. 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 8473

ServicePortTransportDescriptionReferenceUpdated
vp2p 8473 TCP, UDP Virtual Point to Point - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 8473, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8473'      # process listening on 8473
sudo lsof -nP -i :8473

macOS

sudo lsof -nP -i :8473

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8473 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8473
netstat -ano | findstr :8473

From another machine

nmap -p 8473 -sV <host>
sudo nmap -sU -p 8473 <host>
nc -zv <host> 8473

Block it in the firewall

sudo ufw deny 8473/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8473" -Direction Inbound -LocalPort 8473 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8473 used for?

Port 8473 is assigned by IANA to vp2p (Virtual Point to Point).

Is port 8473 TCP or UDP?

Port 8473 is registered for TCP and UDP.

Is it safe to open port 8473?

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 8473 is open?

On Linux run "ss -ltnup 'sport = :8473'", on macOS "lsof -nP -i :8473", and on Windows "netstat -ano | findstr :8473" to see the local process. From another machine, "nmap -p 8473 <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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