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// DevOps, cloud & containers

Port 1139: Enterprise Virtual Manager

Port 1139 is assigned by IANA to evm (Enterprise Virtual Manager).

1139

How evm works

DevOps, cloud & containers
adminhostevm adminhostevm

Commands sent to port 1139 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 1139 dangerous?

We have no specific security note for port 1139. 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 1139

ServicePortTransportDescriptionReferenceUpdated
evm 1139 TCP, UDP Enterprise Virtual Manager - 2007-10-04

// source: IANA service name and port number registry

03 Check it

Which program uses port 1139, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1139'      # process listening on 1139
sudo lsof -nP -i :1139

macOS

sudo lsof -nP -i :1139

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1139 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1139
netstat -ano | findstr :1139

From another machine

nmap -p 1139 -sV <host>
sudo nmap -sU -p 1139 <host>
nc -zv <host> 1139

Block it in the firewall

sudo ufw deny 1139/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1139" -Direction Inbound -LocalPort 1139 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1139 used for?

Port 1139 is assigned by IANA to evm (Enterprise Virtual Manager).

Is port 1139 TCP or UDP?

Port 1139 is registered for TCP and UDP.

Is it safe to open port 1139?

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 1139 is open?

On Linux run "ss -ltnup 'sport = :1139'", on macOS "lsof -nP -i :1139", and on Windows "netstat -ano | findstr :1139" to see the local process. From another machine, "nmap -p 1139 <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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