CyberHunter
Local dataset, no network
// Other services

Port 4668: MMA EDS Service

Port 4668 is assigned by IANA to mmaeds (MMA EDS Service).

4668

How mmaeds works

Other services
client:4668mmaedsresponse client:4668mmaedsresponse

The client sends a request to port 4668 and the mmaeds 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 4668 dangerous?

We have no specific security note for port 4668. 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 4668

ServicePortTransportDescriptionReferenceUpdated
mmaeds 4668 TCP, UDP MMA EDS Service - 2006-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 4668, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4668'      # process listening on 4668
sudo lsof -nP -i :4668

macOS

sudo lsof -nP -i :4668

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4668 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4668
netstat -ano | findstr :4668

From another machine

nmap -p 4668 -sV <host>
sudo nmap -sU -p 4668 <host>
nc -zv <host> 4668

Block it in the firewall

sudo ufw deny 4668/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4668" -Direction Inbound -LocalPort 4668 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4668 used for?

Port 4668 is assigned by IANA to mmaeds (MMA EDS Service).

Is port 4668 TCP or UDP?

Port 4668 is registered for TCP and UDP.

Is it safe to open port 4668?

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 4668 is open?

On Linux run "ss -ltnup 'sport = :4668'", on macOS "lsof -nP -i :4668", and on Windows "netstat -ano | findstr :4668" to see the local process. From another machine, "nmap -p 4668 <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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