- 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 33333: Digital Gaslight Service
Port 33333 is assigned by IANA to dgi-serv (Digital Gaslight Service).
33333
How dgi-serv works
Other servicesThe client sends a request to port 33333 and the dgi-serv service answers.
- Transport
- TCP
- 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
Is port 33333 dangerous?
We have no specific security note for port 33333. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 33333
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| dgi-serv | 33333 | TCP | Digital Gaslight Service | - | 2010-03-02 |
| - | 33333 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 33333, and is it reachable?
Linux
sudo ss -ltnup 'sport = :33333' # process listening on 33333
sudo lsof -nP -i :33333macOS
sudo lsof -nP -i :33333
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 33333 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 33333 netstat -ano | findstr :33333
From another machine
nmap -p 33333 -sV <host> nc -zv <host> 33333
Block it in the firewall
sudo ufw deny 33333/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 33333" -Direction Inbound -LocalPort 33333 -Protocol TCP -Action Block # Windows
What is port 33333 used for?
Port 33333 is assigned by IANA to dgi-serv (Digital Gaslight Service).
Is port 33333 TCP or UDP?
Port 33333 is registered for TCP.
Is it safe to open port 33333?
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 33333 is open?
On Linux run "ss -ltnup 'sport = :33333'", on macOS "lsof -nP -i :33333", and on Windows "netstat -ano | findstr :33333" to see the local process. From another machine, "nmap -p 33333 <host>" shows whether it is reachable.
Other other services ports
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp