User Documentation

Page 97
Appendix 4 – Internet connection requirements of u-link VPN clients (Service PC / Router)
Copyright © 2020 Weidmüller Interface GmbH & Co. / All rights reserved. Reproduction without permission is prohibited.
A4 - Overview of used u-link connection parameters
V1.5.1 / Oct, 2020
Minimum required communication parameters for u
-link VPN Clients (PC and Router): Updated October 09, 2020
Version
Protocol / Port
Used DNS name
Currently used Target IP
Comments
Connection type
Registration
Router
TCP /
443 / 80
u
-link.weidmueller.com
www.u
-link.weidmueller.com
13.69.30.109
Registration
Outgoing
VPN Client (PC)
TCP / 443 / 80
WWH (World Wide Heartbeat) for Registration, Still Alive messages and VPN Server request
Router
≤
Version 3.2.2
TCP / 443 (SSL/TLS)
wwh.big
-linx.de
wwh2.big
-linx.de
217.119.57.27
13.81.4.92
Main server
Backup server
Outgoing
≥
Version 3.2.3
TCP / 443 (SSL/TLS)
wwh1
-we.aw-cp.de
wwh1
-ne.aw-cp.de
13.81.4.92
52.169.107.229
Main server
Backup server
Outgoing
VPN Client (PC)
≤
Version 2.0.128
TCP / 443 (SSL/TLS)
wwh1.aw
-cp.de
62.138.201.27
Main server
Outgoing
≥
Version 2.0.129
TCP / 443 (SSL/TLS)
wwh1
-we.aw-cp.de
wwh1
-ne.aw-cp.de
13.81.4.92
52.169.107.229
Main
server
Backup
server
Outgoing
VPN Server
Router
≤
Version 3.2.2
TCP / 443 (OpenVPN)
idaprof2.ads
-tec.de
217.119.57.23
Main server
Outgoing
≥
Version 3.2.3
TCP / 443 (OpenVPN)
vpn1
-we.aw-cp.de
vpn1
-ne.aw-cp.de
52.166.202.111
52.169.106.31
Main server
Backup server
Outgoing
VPN Client (PC)
≤
Version 2.0.128
TCP / 443 (OpenVPN)
vpn2.aw
-cp.de
217.119.57.23
Main server
Outgoing
≥
Version 2.0.129
TCP / 443 (OpenVPN)
vpn1
-we.aw-cp.de
vpn1
-ne.aw-cp.de
52.166.202.111
52.169.106.31
Main
server
Backup
server
Outgoing
Other port and protocols important for u
-link communication
DNS request for Router and VPN
-Client
(PC)
TCP / 53
UDP / 53
Mandatory for resolving the DNS names
Outgoing
NTP time request for Router
UDP / 123
Recommended to update the Router's time automatically (Correct Router time is
important for validity of u
-link certificate to be used for VPN connection to u-link VPN
server).
Outgoing
Note:
This are the recommended Servers used for u
-link Remote Access Service. If these are prohibited, the Clients may change to other servers displayed in the extended list.
If a Service PC (u
-link VPN client) or Router is passing a corporate firewall to access the Internet, please clarify with the responsible IT administration that the listed connection
types are allowed (if you have any connection problems).
We recommend to use the listed DNS names for Firewall settings. If possible avoid using the currently used IP addresses.