CyberHunter
Local dataset, no network
// Other services

Port 7101: Embedded Light Control Network

Port 7101 is assigned by IANA to elcn (Embedded Light Control Network).

7101

How elcn works

Other services
client:7101elcnresponse client:7101elcnresponse

The client sends a request to port 7101 and the elcn 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 7101 dangerous?

We have no specific security note for port 7101. 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 7101

ServicePortTransportDescriptionReferenceUpdated
elcn 7101 TCP, UDP Embedded Light Control Network - 2007-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 7101, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7101'      # process listening on 7101
sudo lsof -nP -i :7101

macOS

sudo lsof -nP -i :7101

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7101 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7101
netstat -ano | findstr :7101

From another machine

nmap -p 7101 -sV <host>
sudo nmap -sU -p 7101 <host>
nc -zv <host> 7101

Block it in the firewall

sudo ufw deny 7101/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7101" -Direction Inbound -LocalPort 7101 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 7101 used for?

Port 7101 is assigned by IANA to elcn (Embedded Light Control Network).

Is port 7101 TCP or UDP?

Port 7101 is registered for TCP and UDP.

Is it safe to open port 7101?

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 7101 is open?

On Linux run "ss -ltnup 'sport = :7101'", on macOS "lsof -nP -i :7101", and on Windows "netstat -ano | findstr :7101" to see the local process. From another machine, "nmap -p 7101 <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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