CyberHunter
Local dataset, no network
// Other services

Port 5675: V5UA application port

Port 5675 is assigned by IANA to v5ua (V5UA application port).

5675

How v5ua works

Other services
client:5675v5uaresponse client:5675v5uaresponse

The client sends a request to port 5675 and the v5ua service answers.

Transport
TCP · UDP · SCTP
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 5675 dangerous?

We have no specific security note for port 5675. 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 5675

ServicePortTransportDescriptionReferenceUpdated
v5ua 5675 TCP, UDP, SCTP V5UA application port RFC 3807 -

// source: IANA service name and port number registry

03 Check it

Which program uses port 5675, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5675'      # process listening on 5675
sudo lsof -nP -i :5675

macOS

sudo lsof -nP -i :5675

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5675 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5675
netstat -ano | findstr :5675

From another machine

nmap -p 5675 -sV <host>
sudo nmap -sU -p 5675 <host>
nc -zv <host> 5675

Block it in the firewall

sudo ufw deny 5675/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5675" -Direction Inbound -LocalPort 5675 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5675 used for?

Port 5675 is assigned by IANA to v5ua (V5UA application port).

Is port 5675 TCP or UDP?

Port 5675 is registered for TCP and UDP and SCTP.

Is it safe to open port 5675?

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 5675 is open?

On Linux run "ss -ltnup 'sport = :5675'", on macOS "lsof -nP -i :5675", and on Windows "netstat -ano | findstr :5675" to see the local process. From another machine, "nmap -p 5675 <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

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