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// Other services

Port 4749: Profile for Mac

Port 4749 is assigned by IANA to profilemac (Profile for Mac).

4749

How profilemac works

Other services
client:4749profilemacresponse client:4749profilemacresponse

The client sends a request to port 4749 and the profilemac 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 4749 dangerous?

We have no specific security note for port 4749. 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 4749

ServicePortTransportDescriptionReferenceUpdated
profilemac 4749 TCP, UDP Profile for Mac - 2006-05

// source: IANA service name and port number registry

03 Check it

Which program uses port 4749, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4749'      # process listening on 4749
sudo lsof -nP -i :4749

macOS

sudo lsof -nP -i :4749

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4749 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4749
netstat -ano | findstr :4749

From another machine

nmap -p 4749 -sV <host>
sudo nmap -sU -p 4749 <host>
nc -zv <host> 4749

Block it in the firewall

sudo ufw deny 4749/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4749" -Direction Inbound -LocalPort 4749 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4749 used for?

Port 4749 is assigned by IANA to profilemac (Profile for Mac).

Is port 4749 TCP or UDP?

Port 4749 is registered for TCP and UDP.

Is it safe to open port 4749?

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 4749 is open?

On Linux run "ss -ltnup 'sport = :4749'", on macOS "lsof -nP -i :4749", and on Windows "netstat -ano | findstr :4749" to see the local process. From another machine, "nmap -p 4749 <host>" shows whether it is reachable.

05 Related
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