CyberHunter
Local dataset, no network
// Other services

Port 7724: Novell Snap-in Deep Freeze Control

Port 7724 is assigned by IANA to nsdeepfreezectl (Novell Snap-in Deep Freeze Control).

7724

How nsdeepfreezectl works

Other services
client:7724nsdeepfreezectlresponse client:7724nsdeepfreezectlresponse

The client sends a request to port 7724 and the nsdeepfreezectl 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 7724 dangerous?

We have no specific security note for port 7724. 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 7724

ServicePortTransportDescriptionReferenceUpdated
nsdeepfreezectl 7724 TCP, UDP Novell Snap-in Deep Freeze Control - 2008-01-07

// source: IANA service name and port number registry

03 Check it

Which program uses port 7724, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7724'      # process listening on 7724
sudo lsof -nP -i :7724

macOS

sudo lsof -nP -i :7724

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7724 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7724
netstat -ano | findstr :7724

From another machine

nmap -p 7724 -sV <host>
sudo nmap -sU -p 7724 <host>
nc -zv <host> 7724

Block it in the firewall

sudo ufw deny 7724/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7724" -Direction Inbound -LocalPort 7724 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 7724 used for?

Port 7724 is assigned by IANA to nsdeepfreezectl (Novell Snap-in Deep Freeze Control).

Is port 7724 TCP or UDP?

Port 7724 is registered for TCP and UDP.

Is it safe to open port 7724?

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 7724 is open?

On Linux run "ss -ltnup 'sport = :7724'", on macOS "lsof -nP -i :7724", and on Windows "netstat -ano | findstr :7724" to see the local process. From another machine, "nmap -p 7724 <host>" shows whether it is reachable.

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