CyberHunter
Local dataset, no network
// Other services

Port 9617: eRunbook Server

Port 9617 is assigned by IANA to erunbook_server (eRunbook Server), erunbook-server (eRunbook Server IANA assigned this well-formed service name as a replacement for "erunbook_server".).

9617

How erunbook_server works

Other services
client:9617erunbook_serverresponse client:9617erunbook_serverresponse

The client sends a request to port 9617 and the erunbook_server service answers.

Transport
TCP
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
Other services
01 Security

Is port 9617 dangerous?

We have no specific security note for port 9617. 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 9617

ServicePortTransportDescriptionReferenceUpdated
erunbook_server 9617 TCP eRunbook Server - 2009-03-10
erunbook-server 9617 TCP eRunbook Server IANA assigned this well-formed service name as a replacement for "erunbook_server". - 2009-03-10
-9617-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 9617, and is it reachable?

Linux

sudo ss -ltnup 'sport = :9617'      # process listening on 9617
sudo lsof -nP -i :9617

macOS

sudo lsof -nP -i :9617

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 9617 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 9617
netstat -ano | findstr :9617

From another machine

nmap -p 9617 -sV <host>
nc -zv <host> 9617

Block it in the firewall

sudo ufw deny 9617/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 9617" -Direction Inbound -LocalPort 9617 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 9617 used for?

Port 9617 is assigned by IANA to erunbook_server (eRunbook Server), erunbook-server (eRunbook Server IANA assigned this well-formed service name as a replacement for "erunbook_server".).

Is port 9617 TCP or UDP?

Port 9617 is registered for TCP.

Is it safe to open port 9617?

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 9617 is open?

On Linux run "ss -ltnup 'sport = :9617'", on macOS "lsof -nP -i :9617", and on Windows "netstat -ano | findstr :9617" to see the local process. From another machine, "nmap -p 9617 <host>" shows whether it is reachable.

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