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// Network services

Port 3224: AES Discovery Port

Port 3224 is assigned by IANA to aes-discovery (AES Discovery Port).

3224

How aes-discovery works

Network services
client:3224aes-discoveryresponse client:3224aes-discoveryresponse

The client sends a request to port 3224 and the aes-discovery 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
Network services
01 Security

Is port 3224 dangerous?

We have no specific security note for port 3224. Its risk depends on the program actually listening on it. General advice for network services services:

  • Answer only the networks that need the service (no open resolvers, relays or reflectors).
  • UDP services can be abused for DDoS amplification: rate-limit or block them at the edge.
  • Disable legacy test services that have no use in production.
02 Registry

IANA registry entries for port 3224

ServicePortTransportDescriptionReferenceUpdated
aes-discovery 3224 TCP, UDP AES Discovery Port - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3224, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3224'      # process listening on 3224
sudo lsof -nP -i :3224

macOS

sudo lsof -nP -i :3224

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3224 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3224
netstat -ano | findstr :3224

From another machine

nmap -p 3224 -sV <host>
sudo nmap -sU -p 3224 <host>
nc -zv <host> 3224

Block it in the firewall

sudo ufw deny 3224/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3224" -Direction Inbound -LocalPort 3224 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3224 used for?

Port 3224 is assigned by IANA to aes-discovery (AES Discovery Port).

Is port 3224 TCP or UDP?

Port 3224 is registered for TCP and UDP.

Is it safe to open port 3224?

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. Answer only the networks that need the service (no open resolvers, relays or reflectors).

How do I check if port 3224 is open?

On Linux run "ss -ltnup 'sport = :3224'", on macOS "lsof -nP -i :3224", and on Windows "netstat -ano | findstr :3224" to see the local process. From another machine, "nmap -p 3224 <host>" shows whether it is reachable.

05 Related
:53 DNS tcp · udp · moderate risk :135 MS RPC tcp · udp · high risk :123 NTP udp · tcp · moderate risk :67 DHCP server udp · tcp · moderate risk :111 rpcbind tcp · udp · high risk :9100 Raw printing (JetDirect) tcp · udp · high risk :631 IPP / CUPS tcp · udp · high risk :5353 mDNS udp · tcp · moderate risk

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