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// Other services

Port 2033:

Port 2033 is assigned by IANA to glogger ().

2033

How glogger works

Other services
client:2033gloggerresponse client:2033gloggerresponse

The client sends a request to port 2033 and the glogger 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 2033 dangerous?

We have no specific security note for port 2033. 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 2033

ServicePortTransportDescriptionReferenceUpdated
glogger 2033 TCP, UDP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2033, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2033'      # process listening on 2033
sudo lsof -nP -i :2033

macOS

sudo lsof -nP -i :2033

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2033 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2033
netstat -ano | findstr :2033

From another machine

nmap -p 2033 -sV <host>
sudo nmap -sU -p 2033 <host>
nc -zv <host> 2033

Block it in the firewall

sudo ufw deny 2033/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2033" -Direction Inbound -LocalPort 2033 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2033 used for?

Port 2033 is assigned by IANA to glogger ().

Is port 2033 TCP or UDP?

Port 2033 is registered for TCP and UDP.

Is it safe to open port 2033?

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 2033 is open?

On Linux run "ss -ltnup 'sport = :2033'", on macOS "lsof -nP -i :2033", and on Windows "netstat -ano | findstr :2033" to see the local process. From another machine, "nmap -p 2033 <host>" shows whether it is reachable.

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