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// Other services

Port 709: Entrust Key Management Service Handler

Port 709 is assigned by IANA to entrust-kmsh (Entrust Key Management Service Handler).

709

How entrust-kmsh works

Other services
client:709entrust-kmshresponse client:709entrust-kmshresponse

The client sends a request to port 709 and the entrust-kmsh service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Well-known (0-1023)
Category
Other services
01 Security

Is port 709 dangerous?

We have no specific security note for port 709. 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 709

ServicePortTransportDescriptionReferenceUpdated
entrust-kmsh 709 TCP, UDP Entrust Key Management Service Handler - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 709, and is it reachable?

Linux

sudo ss -ltnup 'sport = :709'      # process listening on 709
sudo lsof -nP -i :709

macOS

sudo lsof -nP -i :709

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 709 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 709
netstat -ano | findstr :709

From another machine

nmap -p 709 -sV <host>
sudo nmap -sU -p 709 <host>
nc -zv <host> 709

Block it in the firewall

sudo ufw deny 709/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 709" -Direction Inbound -LocalPort 709 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 709 used for?

Port 709 is assigned by IANA to entrust-kmsh (Entrust Key Management Service Handler).

Is port 709 TCP or UDP?

Port 709 is registered for TCP and UDP.

Is it safe to open port 709?

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 709 is open?

On Linux run "ss -ltnup 'sport = :709'", on macOS "lsof -nP -i :709", and on Windows "netstat -ano | findstr :709" to see the local process. From another machine, "nmap -p 709 <host>" shows whether it is reachable.

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