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// DevOps, cloud & containers

Port 2386: Virtual Tape

Port 2386 is assigned by IANA to virtualtape (Virtual Tape).

2386

How virtualtape works

DevOps, cloud & containers
adminhostvirtualtape adminhostvirtualtape

Commands sent to port 2386 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 2386 dangerous?

We have no specific security note for port 2386. 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 2386

ServicePortTransportDescriptionReferenceUpdated
virtualtape 2386 TCP, UDP Virtual Tape - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2386, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2386'      # process listening on 2386
sudo lsof -nP -i :2386

macOS

sudo lsof -nP -i :2386

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2386 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2386
netstat -ano | findstr :2386

From another machine

nmap -p 2386 -sV <host>
sudo nmap -sU -p 2386 <host>
nc -zv <host> 2386

Block it in the firewall

sudo ufw deny 2386/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2386" -Direction Inbound -LocalPort 2386 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2386 used for?

Port 2386 is assigned by IANA to virtualtape (Virtual Tape).

Is port 2386 TCP or UDP?

Port 2386 is registered for TCP and UDP.

Is it safe to open port 2386?

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 2386 is open?

On Linux run "ss -ltnup 'sport = :2386'", on macOS "lsof -nP -i :2386", and on Windows "netstat -ano | findstr :2386" to see the local process. From another machine, "nmap -p 2386 <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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