State of knowledge

April 2024

The following overview lists hostnames and IP addresses of the online services used by services such as UCConnect or ProCall Meetings.
This list can be used when special firewall settings with a positive list are needed so that UCServer or other clients can reach services on the internet.

Please note that IP addresses and DNS entries can change continuously. 

Therefore, when creating positive lists in your network, you should work with wildcards.

It is best to create wildcard entries for *.ucconnect.de and *.meetings.procall.de and to allow all traffic to these hosts.

If you cannot work with the wildcard entries, note that you will need to update the rules in your firewall when entries change on this page. For this reason, the tables are date stamped.

The tables are provided with a date, which indicates the time of the last change.
The latest changes are also highlighted GREENin the tables and marked as "changed" in the (grüner Stern) column.

Default services

Status  

Port number

Transport

Direction

Host

Purpose

443

TLSout

(*.)meetings.procall.de

ProCall Meetings services, such as the web front-end.

20000-40000UDPout*.meetings.procall.deMedia to media server
443UDPout*.meetings.procall.deSTUN requests to determine the public IP address of the client
443UDP/TCP/TLSout*.meetings.procall.deMedia relay via TURN
443TLSout*.ucconnect.de

Connection of the UCServer to UCConnect and login of the client browser via UCConnect at the UCServer

The WebSocket protocol must be enabled.

443/3478UDP/TCPout*.ucconnect.deUCConnect services: STUN/TURN

DNS entries and IP addresses for the wildcards 

ProCall Meetings (*.meetings.procall.de)

Status (grüner Stern)  

RoleDNS nameIP addressPorts/Log(grüner Stern) changed
Web appmeetings.procall.de13.107.213.67
13.107.246.67		443/TCP


Load balancer

lb.meetings.procall.de

135.125.218.1443/TCP


Server componentsecs-1.meetings.procall.de

51.89.117.254

443/TCP and 20000-40000/UDP
Server componentsecs-2.meetings.procall.de

54.36.117.77

443/TCP and 20000-40000/UDP


Server componentsecs-3.meetings.procall.de54.37.77.136443/TCP and 20000-40000/UDP


Server componentsecs-4.meetings.procall.de135.125.245.56443/TCP and 20000-40000/UDP


Server componentsecs-5.meetings.procall.de

51.89.5.126

443/TCP and 20000-40000/UDP


Server componentsecs-6.meetings.procall.de51.68.165.240443/TCP and 20000-40000/UDP
Server componentsecs-7.meetings.procall.de

51.89.4.156

443/TCP and 20000-40000/UDP


Server componentsecs-8.meetings.procall.de54.36.112.15443/TCP and 20000-40000/UDP
Server componentsecs-10.meetings.procall.de

51.89.117.180

443/TCP and 20000-40000/UDP


Server componentsecs-11.meetings.procall.de

51.68.167.216

443/TCP and 20000-40000/UDP
Feedback serverlogserver.meetings.procall.de51.210.184.110443/TCP
STUN/TURN serverturn-1.meetings.procall.de

54.36.117.196

443/UDP/TCP


STUN/TURN server

turn-2.meetings.procall.de

135.125.244.210443/UDP/TCP


UCConnect (*.ucconnect.de)

Status  

Role

URL DNS load balancer

IP address/hostname

Ports/Log

(grüner Stern) Changed

Comment

UCCore

uccontroller.ucconnect.de

ucwebapi.ucconnect.de

portal.ucconnect.de


uccore1

  • https://ucc-uccore1-0.ucconnect.de/
  • https://ucwebapi-uccore1-0.ucconnect.de
  • https://portal-uccore1-0.ucconnect.de
  • 51.75.89.110

uccore2

  • https://ucc-uccore2-0.ucconnect.de
  • https://ucwebapi-uccore2-0.ucconnect.de
  • https://portal-uccore2-0.ucconnect.de
  • 54.37.76.231 

uccore3

  • https://ucc-uccore3-0.ucconnect.de
  • https://ucwebapi-uccore3-0.ucconnect.de
  • https://portal-uccore3-0.ucconnect.de
  • 141.95.101.239 

uccore4

  • https://ucc-uccore4-0.ucconnect.de
  • https://ucwebapi-uccore4-0.ucconnect.de
  • https://portal-uccore4-0.ucconnect.de
  • 57.129.34.39 (grüner Stern)

443/TCP

IP

(grüner Stern)

Hosts the Controller, the Portal, the API, and the license server

  • Controller: Load balancer between client and UCWeb and UCServer and UCWeb. (https://uccontroller.ucconnect.de)
  • Portal: Management of customers and partners and their UCServer instances. (https://portal.ucconnect.de)
  • API: Interface to the UCConnect persistence layer.
  • License server: (internal) Interface to the estos license service.
UCWebNot available

ucweb1

  • https://ucweb-ucweb1-0.ucconnect.de/
  • 51.68.167.183 (grüner Stern)

ucweb2

  • https://ucweb-ucweb2-0.ucconnect.de
  • 54.37.78.49 

ucweb3

  • https://ucweb-ucweb3-0.ucconnect.de/
  • 51.75.91.56

ucweb4 

  • https://ucweb-ucweb4-0.ucconnect.de/

  • 51.68.167.230 (grüner Stern)

443/TCP

IP

(grüner Stern)

Hosts UCWeb

  • UCWeb: Proxy between clients and UCServer
UCPush

ucpush.ucconnect.de

ucpush1

  • ucpush-ucpush1-0.ucconnect.de
  • 54.37.77.85

ucpush2

  • ucpush-ucpush2-0.ucconnect.de

  • 135.125.247.189

ucpush3 

  • ucpush-ucpush3-0.ucconnect.de

  • 51.75.95.12

443/TCP



Hosts UCPush

  • UCPush: This is used by the UCServer to send push messages to mobile clients.
UCTurnNot available

ucturn3.ucconnect.de 

  • 54.36.119.226

ucturn4.ucconnect.de 

  • 51.75.94.182

3478/TCP/UDP

5349/TCP/UDP

80/TCP/UDP

443/TCP/UDP

49152-65535/TCP/UDP


Hosts a CoTurn Server

DNS records and IP addresses for Apple APNs and Google FCM

Apple APNs: https://support.apple.com/en-us/HT203609
Google FCM: https://firebase.google.com/docs/cloud-messaging/concept-options#messaging-ports-and-your-firewall

Optional: (Stern) Microsoft Azure apps insights

See https://docs.microsoft.com/en-us/azure/azure-monitor/app/ip-addresses

(Stern) Only required for ProCall meetings if you allow "Functional cookies": https://legal.estos.de/content/latest/datenschutz/datenschutzerklaerungen/datenschutzerklaerung-procall-meetings