CyberHunter
Local dataset, no network
// DevOps, cloud & containers

Port 7550: Cloud Signaling Service

Port 7550 is assigned by IANA to cloudsignaling (Cloud Signaling Service).

7550

How cloudsignaling works

DevOps, cloud & containers
adminhostcloudsignaling adminhostcloudsignaling

Commands sent to port 7550 create and control containers or cluster resources on the host.

Transport
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 7550 dangerous?

We have no specific security note for port 7550. 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 7550

ServicePortTransportDescriptionReferenceUpdated
cloudsignaling 7550 UDP Cloud Signaling Service - 2011-07-01
-7550-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 7550, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7550'      # process listening on 7550
sudo lsof -nP -i :7550

macOS

sudo lsof -nP -i :7550

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7550 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7550
netstat -ano | findstr :7550

From another machine

nmap -p 7550 -sV <host>
sudo nmap -sU -p 7550 <host>
nc -zv <host> 7550

Block it in the firewall

sudo ufw deny 7550/udp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7550" -Direction Inbound -LocalPort 7550 -Protocol UDP -Action Block  # Windows
04 FAQ
What is port 7550 used for?

Port 7550 is assigned by IANA to cloudsignaling (Cloud Signaling Service).

Is port 7550 TCP or UDP?

Port 7550 is registered for UDP.

Is it safe to open port 7550?

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 7550 is open?

On Linux run "ss -ltnup 'sport = :7550'", on macOS "lsof -nP -i :7550", and on Windows "netstat -ano | findstr :7550" to see the local process. From another machine, "nmap -p 7550 <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

Latest vulnerability news

All news