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// Other services

Port 3608: Trendchip control protocol

Port 3608 is assigned by IANA to trendchip-dcp (Trendchip control protocol).

3608

How trendchip-dcp works

Other services
client:3608trendchip-dcpresponse client:3608trendchip-dcpresponse

The client sends a request to port 3608 and the trendchip-dcp 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 3608 dangerous?

We have no specific security note for port 3608. 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 3608

ServicePortTransportDescriptionReferenceUpdated
trendchip-dcp 3608 TCP, UDP Trendchip control protocol - 2002-09

// source: IANA service name and port number registry

03 Check it

Which program uses port 3608, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3608'      # process listening on 3608
sudo lsof -nP -i :3608

macOS

sudo lsof -nP -i :3608

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3608 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3608
netstat -ano | findstr :3608

From another machine

nmap -p 3608 -sV <host>
sudo nmap -sU -p 3608 <host>
nc -zv <host> 3608

Block it in the firewall

sudo ufw deny 3608/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3608" -Direction Inbound -LocalPort 3608 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3608 used for?

Port 3608 is assigned by IANA to trendchip-dcp (Trendchip control protocol).

Is port 3608 TCP or UDP?

Port 3608 is registered for TCP and UDP.

Is it safe to open port 3608?

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 3608 is open?

On Linux run "ss -ltnup 'sport = :3608'", on macOS "lsof -nP -i :3608", and on Windows "netstat -ano | findstr :3608" to see the local process. From another machine, "nmap -p 3608 <host>" shows whether it is reachable.

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