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// Other services

Port 1932: CTT Broker

Port 1932 is assigned by IANA to ctt-broker (CTT Broker).

1932

How ctt-broker works

Other services
client:1932ctt-brokerresponse client:1932ctt-brokerresponse

The client sends a request to port 1932 and the ctt-broker 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 1932 dangerous?

We have no specific security note for port 1932. 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 1932

ServicePortTransportDescriptionReferenceUpdated
ctt-broker 1932 TCP, UDP CTT Broker - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1932, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1932'      # process listening on 1932
sudo lsof -nP -i :1932

macOS

sudo lsof -nP -i :1932

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1932 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1932
netstat -ano | findstr :1932

From another machine

nmap -p 1932 -sV <host>
sudo nmap -sU -p 1932 <host>
nc -zv <host> 1932

Block it in the firewall

sudo ufw deny 1932/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1932" -Direction Inbound -LocalPort 1932 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1932 used for?

Port 1932 is assigned by IANA to ctt-broker (CTT Broker).

Is port 1932 TCP or UDP?

Port 1932 is registered for TCP and UDP.

Is it safe to open port 1932?

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 1932 is open?

On Linux run "ss -ltnup 'sport = :1932'", on macOS "lsof -nP -i :1932", and on Windows "netstat -ano | findstr :1932" to see the local process. From another machine, "nmap -p 1932 <host>" shows whether it is reachable.

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