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// DevOps, cloud & containers

Port 4395: OmniVision communication for Virtual environments

Port 4395 is assigned by IANA to omnivisionesx (OmniVision communication for Virtual environments).

4395

How omnivisionesx works

DevOps, cloud & containers
adminhostomnivisionesx adminhostomnivisionesx

Commands sent to port 4395 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 4395 dangerous?

We have no specific security note for port 4395. 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 4395

ServicePortTransportDescriptionReferenceUpdated
omnivisionesx 4395 TCP, UDP OmniVision communication for Virtual environments - 2009-02-12

// source: IANA service name and port number registry

03 Check it

Which program uses port 4395, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4395'      # process listening on 4395
sudo lsof -nP -i :4395

macOS

sudo lsof -nP -i :4395

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4395 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4395
netstat -ano | findstr :4395

From another machine

nmap -p 4395 -sV <host>
sudo nmap -sU -p 4395 <host>
nc -zv <host> 4395

Block it in the firewall

sudo ufw deny 4395/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4395" -Direction Inbound -LocalPort 4395 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4395 used for?

Port 4395 is assigned by IANA to omnivisionesx (OmniVision communication for Virtual environments).

Is port 4395 TCP or UDP?

Port 4395 is registered for TCP and UDP.

Is it safe to open port 4395?

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 4395 is open?

On Linux run "ss -ltnup 'sport = :4395'", on macOS "lsof -nP -i :4395", and on Windows "netstat -ano | findstr :4395" to see the local process. From another machine, "nmap -p 4395 <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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