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// Other services

Port 35357: OpenStack ID Service

Port 35357 is assigned by IANA to openstack-id (OpenStack ID Service).

35357

How openstack-id works

Other services
client:35357openstack-idresponse client:35357openstack-idresponse

The client sends a request to port 35357 and the openstack-id service answers.

Transport
TCP
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
Other services
01 Security

Is port 35357 dangerous?

We have no specific security note for port 35357. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 35357

ServicePortTransportDescriptionReferenceUpdated
openstack-id 35357 TCP OpenStack ID Service - 2011-08-15
-35357-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 35357, and is it reachable?

Linux

sudo ss -ltnup 'sport = :35357'      # process listening on 35357
sudo lsof -nP -i :35357

macOS

sudo lsof -nP -i :35357

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 35357 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 35357
netstat -ano | findstr :35357

From another machine

nmap -p 35357 -sV <host>
nc -zv <host> 35357

Block it in the firewall

sudo ufw deny 35357/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 35357" -Direction Inbound -LocalPort 35357 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 35357 used for?

Port 35357 is assigned by IANA to openstack-id (OpenStack ID Service).

Is port 35357 TCP or UDP?

Port 35357 is registered for TCP.

Is it safe to open port 35357?

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. Close the port if nothing on the host needs it.

How do I check if port 35357 is open?

On Linux run "ss -ltnup 'sport = :35357'", on macOS "lsof -nP -i :35357", and on Windows "netstat -ano | findstr :35357" to see the local process. From another machine, "nmap -p 35357 <host>" shows whether it is reachable.

05 Related
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