CyberHunter
Local dataset, no network
// Other services

Port 4412: SmallChat

Port 4412 is assigned by IANA to smallchat (SmallChat).

4412

How smallchat works

Other services
client:4412smallchatresponse client:4412smallchatresponse

The client sends a request to port 4412 and the smallchat service answers.

Transport
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 4412 dangerous?

We have no specific security note for port 4412. 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 4412

ServicePortTransportDescriptionReferenceUpdated
smallchat 4412 UDP SmallChat - 2015-08-18
-4412-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 4412, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4412'      # process listening on 4412
sudo lsof -nP -i :4412

macOS

sudo lsof -nP -i :4412

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4412 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4412
netstat -ano | findstr :4412

From another machine

nmap -p 4412 -sV <host>
sudo nmap -sU -p 4412 <host>
nc -zv <host> 4412

Block it in the firewall

sudo ufw deny 4412/udp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4412" -Direction Inbound -LocalPort 4412 -Protocol UDP -Action Block  # Windows
04 FAQ
What is port 4412 used for?

Port 4412 is assigned by IANA to smallchat (SmallChat).

Is port 4412 TCP or UDP?

Port 4412 is registered for UDP.

Is it safe to open port 4412?

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 4412 is open?

On Linux run "ss -ltnup 'sport = :4412'", on macOS "lsof -nP -i :4412", and on Windows "netstat -ano | findstr :4412" to see the local process. From another machine, "nmap -p 4412 <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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