CyberHunter
Local dataset, no network
// Other services

Port 7697: KLIO communications

Port 7697 is assigned by IANA to klio (KLIO communications).

7697

How klio works

Other services
client:7697klioresponse client:7697klioresponse

The client sends a request to port 7697 and the klio 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 7697 dangerous?

We have no specific security note for port 7697. 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 7697

ServicePortTransportDescriptionReferenceUpdated
klio 7697 TCP, UDP KLIO communications - 2005-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 7697, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7697'      # process listening on 7697
sudo lsof -nP -i :7697

macOS

sudo lsof -nP -i :7697

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7697 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7697
netstat -ano | findstr :7697

From another machine

nmap -p 7697 -sV <host>
sudo nmap -sU -p 7697 <host>
nc -zv <host> 7697

Block it in the firewall

sudo ufw deny 7697/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7697" -Direction Inbound -LocalPort 7697 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 7697 used for?

Port 7697 is assigned by IANA to klio (KLIO communications).

Is port 7697 TCP or UDP?

Port 7697 is registered for TCP and UDP.

Is it safe to open port 7697?

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 7697 is open?

On Linux run "ss -ltnup 'sport = :7697'", on macOS "lsof -nP -i :7697", and on Windows "netstat -ano | findstr :7697" to see the local process. From another machine, "nmap -p 7697 <host>" shows whether it is reachable.

05 Related
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