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// Other services

Port 17007:

Port 17007 is assigned by IANA to isode-dua ().

17007

How isode-dua works

Other services
client:17007isode-duaresponse client:17007isode-duaresponse

The client sends a request to port 17007 and the isode-dua 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
Registered (1024-49151)
Category
Other services
01 Security

Is port 17007 dangerous?

We have no specific security note for port 17007. 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 17007

ServicePortTransportDescriptionReferenceUpdated
isode-dua 17007 TCP, UDP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 17007, and is it reachable?

Linux

sudo ss -ltnup 'sport = :17007'      # process listening on 17007
sudo lsof -nP -i :17007

macOS

sudo lsof -nP -i :17007

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 17007 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 17007
netstat -ano | findstr :17007

From another machine

nmap -p 17007 -sV <host>
sudo nmap -sU -p 17007 <host>
nc -zv <host> 17007

Block it in the firewall

sudo ufw deny 17007/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 17007" -Direction Inbound -LocalPort 17007 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 17007 used for?

Port 17007 is assigned by IANA to isode-dua ().

Is port 17007 TCP or UDP?

Port 17007 is registered for TCP and UDP.

Is it safe to open port 17007?

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 17007 is open?

On Linux run "ss -ltnup 'sport = :17007'", on macOS "lsof -nP -i :17007", and on Windows "netstat -ano | findstr :17007" to see the local process. From another machine, "nmap -p 17007 <host>" shows whether it is reachable.

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