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// Other services

Port 3178: Radiance UltraEdge Port

Port 3178 is assigned by IANA to radclientport (Radiance UltraEdge Port).

3178

How radclientport works

Other services
client:3178radclientportresponse client:3178radclientportresponse

The client sends a request to port 3178 and the radclientport 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 3178 dangerous?

We have no specific security note for port 3178. 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 3178

ServicePortTransportDescriptionReferenceUpdated
radclientport 3178 TCP, UDP Radiance UltraEdge Port - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3178, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3178'      # process listening on 3178
sudo lsof -nP -i :3178

macOS

sudo lsof -nP -i :3178

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3178 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3178
netstat -ano | findstr :3178

From another machine

nmap -p 3178 -sV <host>
sudo nmap -sU -p 3178 <host>
nc -zv <host> 3178

Block it in the firewall

sudo ufw deny 3178/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3178" -Direction Inbound -LocalPort 3178 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3178 used for?

Port 3178 is assigned by IANA to radclientport (Radiance UltraEdge Port).

Is port 3178 TCP or UDP?

Port 3178 is registered for TCP and UDP.

Is it safe to open port 3178?

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 3178 is open?

On Linux run "ss -ltnup 'sport = :3178'", on macOS "lsof -nP -i :3178", and on Windows "netstat -ano | findstr :3178" to see the local process. From another machine, "nmap -p 3178 <host>" shows whether it is reachable.

05 Related
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