---
title: "Protocols and ports used by CUE System"
canonical: "https://docs.cuesystem.com/space/CVCHELP/509083649/Protocols%20and%20ports%20used%20by%20CUE%20System"
format: markdown
---
> Macro (toc)

---

# appCUE, iCUE, aCUE, pcCUE

#### TCP : 53128

- CVC Admin Protocol for communication with CVC
- IPC (Inter Project Communication) system

#### UDP: 53

- DNS protocol to convert URL/domain name to an IP address

#### UDP : 33333                

- CUEnet protocol for communication with other CUEunits

#### UDP broadcast : 33333

- CUEnet protocol for communication with other CUEunits
- System for looking for other CUEunits on the local network

# CUE Visual Composer

#### TCP : 80

- CVC Admin protocol for upload /debug

#### TCP : 53128

- CVC Admin protocol for upload /debug
- IPC (Inter Project Communication) system

#### UDP : 53129

- Communication with tapCUE-4

#### UDP : 33333

- CUEnet protocol for communication with real CUEunits

#### UDP broadcast : 33333

- CUEnet protocol for communication with real CUEunits
- System for looking for CUEunits on the local network

# CUEunits

#### TCP : 80       

- AdminWEB (http)
- CVC Admin protocol for communication with CVC

#### TCP : 443       

- AdminWEB (https)

#### TCP : 53128 

- AdminWEB (http) - serves as an alternative to the default http port (80)
- CVC Admin protocol for communication with CVC
- IPC (Inter Project Communication) system
- Communication with tapCUE-4

#### UDP: 53

- DNS protocol to convert URL/domain name to an IP address

#### UDP : 1900

- SSDP (Simple Service Discovery Protocol)

#### UDP : 5353, multicast 224.0.0.251

- MDNS protocol

#### UDP : 5355, multicast 224.0.0.252

- LLMNR protocol

#### UDP : 33333

- CUEnet protocol for communication with other CUEunits

#### UDP broadcast : 33333

- CUEnet protocol for communication with other CUEunits
- System for looking for other CUEunits on the local network

#### UDP : 53129

- Communication with tapCUE-4

# tapCUE-4

#### TCP : 80       

- AdminWEB

#### TCP : 53128 

- Communication with CUEunits

#### UDP : 1900

- SSDP (Simple Service Discovery Protocol)

#### UDP broadcast : 33333

- System for looking for units on the local network

#### UDP : 53129

- Communication with CUEunits and CVC

# CVC Application Loader

#### TCP : 80       

- CVC Admin protocol for uploading XPL application to units

#### TCP : 53128 

- CVC Admin protocol for uploading XPL application to units

#### UDP broadcast : 33333

- System for looking for CUEunits on the local network