CyberHunter
Local dataset, no network
// Other services

Port 3006: Instant Internet Admin

Port 3006 is assigned by IANA to ii-admin (Instant Internet Admin).

3006

How ii-admin works

Other services
client:3006ii-adminresponse client:3006ii-adminresponse

The client sends a request to port 3006 and the ii-admin 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 3006 dangerous?

We have no specific security note for port 3006. 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 3006

ServicePortTransportDescriptionReferenceUpdated
ii-admin 3006 TCP, UDP Instant Internet Admin - 2019-12-19

// source: IANA service name and port number registry

03 Check it

Which program uses port 3006, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3006'      # process listening on 3006
sudo lsof -nP -i :3006

macOS

sudo lsof -nP -i :3006

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3006 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3006
netstat -ano | findstr :3006

From another machine

nmap -p 3006 -sV <host>
sudo nmap -sU -p 3006 <host>
nc -zv <host> 3006

Block it in the firewall

sudo ufw deny 3006/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3006" -Direction Inbound -LocalPort 3006 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3006 used for?

Port 3006 is assigned by IANA to ii-admin (Instant Internet Admin).

Is port 3006 TCP or UDP?

Port 3006 is registered for TCP and UDP.

Is it safe to open port 3006?

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 3006 is open?

On Linux run "ss -ltnup 'sport = :3006'", on macOS "lsof -nP -i :3006", and on Windows "netstat -ano | findstr :3006" to see the local process. From another machine, "nmap -p 3006 <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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