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// DevOps, cloud & containers

Port 13218: EMC Virtual CAS Service

Port 13218 is assigned by IANA to emc-vcas-tcp (EMC Virtual CAS Service), emc-vcas-udp (EMV Virtual CAS Service Discovery).

13218

How emc-vcas-tcp works

DevOps, cloud & containers
adminhostemc-vcas-tcp adminhostemc-vcas-tcp

Commands sent to port 13218 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
Assigned2 registered services
Range
Registered (1024-49151)
Category
DevOps, cloud & containers
01 Security

Is port 13218 dangerous?

We have no specific security note for port 13218. 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 13218

ServicePortTransportDescriptionReferenceUpdated
emc-vcas-tcp 13218 TCP EMC Virtual CAS Service - -
emc-vcas-udp 13218 UDP EMV Virtual CAS Service Discovery - 2008-12-04

// source: IANA service name and port number registry

03 Check it

Which program uses port 13218, and is it reachable?

Linux

sudo ss -ltnup 'sport = :13218'      # process listening on 13218
sudo lsof -nP -i :13218

macOS

sudo lsof -nP -i :13218

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 13218 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 13218
netstat -ano | findstr :13218

From another machine

nmap -p 13218 -sV <host>
sudo nmap -sU -p 13218 <host>
nc -zv <host> 13218

Block it in the firewall

sudo ufw deny 13218/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 13218" -Direction Inbound -LocalPort 13218 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 13218 used for?

Port 13218 is assigned by IANA to emc-vcas-tcp (EMC Virtual CAS Service), emc-vcas-udp (EMV Virtual CAS Service Discovery).

Is port 13218 TCP or UDP?

Port 13218 is registered for TCP and UDP.

Is it safe to open port 13218?

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 13218 is open?

On Linux run "ss -ltnup 'sport = :13218'", on macOS "lsof -nP -i :13218", and on Windows "netstat -ano | findstr :13218" to see the local process. From another machine, "nmap -p 13218 <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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