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// Other services

Port 5676: RA Administration

Port 5676 is assigned by IANA to raadmin (RA Administration).

5676

How raadmin works

Other services
client:5676raadminresponse client:5676raadminresponse

The client sends a request to port 5676 and the raadmin 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 5676 dangerous?

We have no specific security note for port 5676. 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 5676

ServicePortTransportDescriptionReferenceUpdated
raadmin 5676 TCP, UDP RA Administration - 2002-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 5676, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5676'      # process listening on 5676
sudo lsof -nP -i :5676

macOS

sudo lsof -nP -i :5676

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5676 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5676
netstat -ano | findstr :5676

From another machine

nmap -p 5676 -sV <host>
sudo nmap -sU -p 5676 <host>
nc -zv <host> 5676

Block it in the firewall

sudo ufw deny 5676/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5676" -Direction Inbound -LocalPort 5676 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5676 used for?

Port 5676 is assigned by IANA to raadmin (RA Administration).

Is port 5676 TCP or UDP?

Port 5676 is registered for TCP and UDP.

Is it safe to open port 5676?

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 5676 is open?

On Linux run "ss -ltnup 'sport = :5676'", on macOS "lsof -nP -i :5676", and on Windows "netstat -ano | findstr :5676" to see the local process. From another machine, "nmap -p 5676 <host>" shows whether it is reachable.

05 Related
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