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// Other services

Port 5135: ERP-Scale

Port 5135 is assigned by IANA to erp-scale (ERP-Scale).

5135

How erp-scale works

Other services
client:5135erp-scaleresponse client:5135erp-scaleresponse

The client sends a request to port 5135 and the erp-scale 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 5135 dangerous?

We have no specific security note for port 5135. 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 5135

ServicePortTransportDescriptionReferenceUpdated
erp-scale 5135 TCP ERP-Scale - 2009-10-14
-5135-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5135, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5135'      # process listening on 5135
sudo lsof -nP -i :5135

macOS

sudo lsof -nP -i :5135

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5135 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5135
netstat -ano | findstr :5135

From another machine

nmap -p 5135 -sV <host>
nc -zv <host> 5135

Block it in the firewall

sudo ufw deny 5135/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5135" -Direction Inbound -LocalPort 5135 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5135 used for?

Port 5135 is assigned by IANA to erp-scale (ERP-Scale).

Is port 5135 TCP or UDP?

Port 5135 is registered for TCP.

Is it safe to open port 5135?

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 5135 is open?

On Linux run "ss -ltnup 'sport = :5135'", on macOS "lsof -nP -i :5135", and on Windows "netstat -ano | findstr :5135" to see the local process. From another machine, "nmap -p 5135 <host>" shows whether it is reachable.

05 Related
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