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// Other services

Port 3798: Minilock

Port 3798 is assigned by IANA to minilock (Minilock).

3798

How minilock works

Other services
client:3798minilockresponse client:3798minilockresponse

The client sends a request to port 3798 and the minilock 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 3798 dangerous?

We have no specific security note for port 3798. 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 3798

ServicePortTransportDescriptionReferenceUpdated
minilock 3798 TCP, UDP Minilock - 2003-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 3798, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3798'      # process listening on 3798
sudo lsof -nP -i :3798

macOS

sudo lsof -nP -i :3798

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3798 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3798
netstat -ano | findstr :3798

From another machine

nmap -p 3798 -sV <host>
sudo nmap -sU -p 3798 <host>
nc -zv <host> 3798

Block it in the firewall

sudo ufw deny 3798/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3798" -Direction Inbound -LocalPort 3798 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3798 used for?

Port 3798 is assigned by IANA to minilock (Minilock).

Is port 3798 TCP or UDP?

Port 3798 is registered for TCP and UDP.

Is it safe to open port 3798?

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 3798 is open?

On Linux run "ss -ltnup 'sport = :3798'", on macOS "lsof -nP -i :3798", and on Windows "netstat -ano | findstr :3798" to see the local process. From another machine, "nmap -p 3798 <host>" shows whether it is reachable.

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