- 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.
Port 83: MIT ML Device
Port 83 is assigned by IANA to mit-ml-dev (MIT ML Device).
83
How mit-ml-dev works
Other servicesThe client sends a request to port 83 and the mit-ml-dev 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
- Well-known (0-1023)
- Category
- Other services
Is port 83 dangerous?
We have no specific security note for port 83. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 83
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| mit-ml-dev | 83 | TCP, UDP | MIT ML Device | - | - |
// source: IANA service name and port number registry
Which program uses port 83, and is it reachable?
Linux
sudo ss -ltnup 'sport = :83' # process listening on 83
sudo lsof -nP -i :83macOS
sudo lsof -nP -i :83
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 83 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 83 netstat -ano | findstr :83
From another machine
nmap -p 83 -sV <host> sudo nmap -sU -p 83 <host> nc -zv <host> 83
Block it in the firewall
sudo ufw deny 83/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 83" -Direction Inbound -LocalPort 83 -Protocol TCP -Action Block # Windows
What is port 83 used for?
Port 83 is assigned by IANA to mit-ml-dev (MIT ML Device).
Is port 83 TCP or UDP?
Port 83 is registered for TCP and UDP.
Is it safe to open port 83?
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 83 is open?
On Linux run "ss -ltnup 'sport = :83'", on macOS "lsof -nP -i :83", and on Windows "netstat -ano | findstr :83" to see the local process. From another machine, "nmap -p 83 <host>" shows whether it is reachable.
Other other services ports
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