CyberHunter
Local dataset, no network
// Other services

Port 697: UUIDGEN

Port 697 is assigned by IANA to uuidgen (UUIDGEN).

697

How uuidgen works

Other services
client:697uuidgenresponse client:697uuidgenresponse

The client sends a request to port 697 and the uuidgen 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 697 dangerous?

We have no specific security note for port 697. 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 697

ServicePortTransportDescriptionReferenceUpdated
uuidgen 697 TCP, UDP UUIDGEN - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 697, and is it reachable?

Linux

sudo ss -ltnup 'sport = :697'      # process listening on 697
sudo lsof -nP -i :697

macOS

sudo lsof -nP -i :697

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 697 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 697
netstat -ano | findstr :697

From another machine

nmap -p 697 -sV <host>
sudo nmap -sU -p 697 <host>
nc -zv <host> 697

Block it in the firewall

sudo ufw deny 697/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 697" -Direction Inbound -LocalPort 697 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 697 used for?

Port 697 is assigned by IANA to uuidgen (UUIDGEN).

Is port 697 TCP or UDP?

Port 697 is registered for TCP and UDP.

Is it safe to open port 697?

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 697 is open?

On Linux run "ss -ltnup 'sport = :697'", on macOS "lsof -nP -i :697", and on Windows "netstat -ano | findstr :697" to see the local process. From another machine, "nmap -p 697 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

Latest vulnerability news

All news