CyberHunter
Local dataset, no network
// Other services

Port 9616: eRunbook Agent

Port 9616 is assigned by IANA to erunbook_agent (eRunbook Agent), erunbook-agent (eRunbook Agent IANA assigned this well-formed service name as a replacement for "erunbook_agent".).

9616

How erunbook_agent works

Other services
client:9616erunbook_agentresponse client:9616erunbook_agentresponse

The client sends a request to port 9616 and the erunbook_agent 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 9616 dangerous?

We have no specific security note for port 9616. 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 9616

ServicePortTransportDescriptionReferenceUpdated
erunbook_agent 9616 TCP eRunbook Agent - 2009-03-10
erunbook-agent 9616 TCP eRunbook Agent IANA assigned this well-formed service name as a replacement for "erunbook_agent". - 2009-03-10
-9616-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 9616, and is it reachable?

Linux

sudo ss -ltnup 'sport = :9616'      # process listening on 9616
sudo lsof -nP -i :9616

macOS

sudo lsof -nP -i :9616

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 9616 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 9616
netstat -ano | findstr :9616

From another machine

nmap -p 9616 -sV <host>
nc -zv <host> 9616

Block it in the firewall

sudo ufw deny 9616/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 9616" -Direction Inbound -LocalPort 9616 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 9616 used for?

Port 9616 is assigned by IANA to erunbook_agent (eRunbook Agent), erunbook-agent (eRunbook Agent IANA assigned this well-formed service name as a replacement for "erunbook_agent".).

Is port 9616 TCP or UDP?

Port 9616 is registered for TCP.

Is it safe to open port 9616?

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 9616 is open?

On Linux run "ss -ltnup 'sport = :9616'", on macOS "lsof -nP -i :9616", and on Windows "netstat -ano | findstr :9616" to see the local process. From another machine, "nmap -p 9616 <host>" shows whether it is reachable.

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