CyberHunter
Local dataset, no network
// Other services

Port 6222: Radmind Access Protocol

Port 6222 is assigned by IANA to radmind (Radmind Access Protocol).

6222

How radmind works

Other services
client:6222radmindresponse client:6222radmindresponse

The client sends a request to port 6222 and the radmind 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 6222 dangerous?

We have no specific security note for port 6222. 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 6222

ServicePortTransportDescriptionReferenceUpdated
radmind 6222 TCP, UDP Radmind Access Protocol - 2006-03

// source: IANA service name and port number registry

03 Check it

Which program uses port 6222, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6222'      # process listening on 6222
sudo lsof -nP -i :6222

macOS

sudo lsof -nP -i :6222

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6222 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6222
netstat -ano | findstr :6222

From another machine

nmap -p 6222 -sV <host>
sudo nmap -sU -p 6222 <host>
nc -zv <host> 6222

Block it in the firewall

sudo ufw deny 6222/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6222" -Direction Inbound -LocalPort 6222 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6222 used for?

Port 6222 is assigned by IANA to radmind (Radmind Access Protocol).

Is port 6222 TCP or UDP?

Port 6222 is registered for TCP and UDP.

Is it safe to open port 6222?

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 6222 is open?

On Linux run "ss -ltnup 'sport = :6222'", on macOS "lsof -nP -i :6222", and on Windows "netstat -ano | findstr :6222" to see the local process. From another machine, "nmap -p 6222 <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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