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// Other services

Port 4488: Apple Wide Area Connectivity Service ICE Bootstrap

Port 4488 is assigned by IANA to awacs-ice (Apple Wide Area Connectivity Service ICE Bootstrap).

4488

How awacs-ice works

Other services
client:4488awacs-iceresponse client:4488awacs-iceresponse

The client sends a request to port 4488 and the awacs-ice 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 4488 dangerous?

We have no specific security note for port 4488. 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 4488

ServicePortTransportDescriptionReferenceUpdated
awacs-ice 4488 TCP, UDP Apple Wide Area Connectivity Service ICE Bootstrap - 2010-09-24

// source: IANA service name and port number registry

03 Check it

Which program uses port 4488, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4488'      # process listening on 4488
sudo lsof -nP -i :4488

macOS

sudo lsof -nP -i :4488

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4488 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4488
netstat -ano | findstr :4488

From another machine

nmap -p 4488 -sV <host>
sudo nmap -sU -p 4488 <host>
nc -zv <host> 4488

Block it in the firewall

sudo ufw deny 4488/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4488" -Direction Inbound -LocalPort 4488 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4488 used for?

Port 4488 is assigned by IANA to awacs-ice (Apple Wide Area Connectivity Service ICE Bootstrap).

Is port 4488 TCP or UDP?

Port 4488 is registered for TCP and UDP.

Is it safe to open port 4488?

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 4488 is open?

On Linux run "ss -ltnup 'sport = :4488'", on macOS "lsof -nP -i :4488", and on Windows "netstat -ano | findstr :4488" to see the local process. From another machine, "nmap -p 4488 <host>" shows whether it is reachable.

05 Related
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