User Documentation

V1.5.1 / Oct, 2020 Copyright © 2020 Weidmüller Interface GmbH & Co. / All rights reserved. Reproduction without permission is prohibited. Page 98
Appendix 4 – Internet connection requirements of u-link VPN clients (Service PC / Router)
A4 - Overview of used u-link connection parameters including fallback and backward compatibility servers
All possible communication parameters for u
-link VPN Clients (PC and Router): Updated December 03, 2018
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 tables
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
wwh.big
-linx.de
13.81.4.92
52.169.107.229
217.119.57.27
Main server
Backup server
Backward compatibility
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
TCP / 443 & 5955; UDP 1194
vpn1
-we.aw-cp.de
vpn1
-ne.aw-cp.de
No
DNS
No
DNS
vpn2.aw
-cp.de
No
DNS
idaprof2.ads
-tec.de
No
DNS
No
DNS
52.166.202.111
52.169.106.31
61.138.201.23
52.169.24.35
62.138.201.23
217.118.57.23
217.119.57.23
217.119.57.22
217.119.57.28
Main Server
Main Server
Backup Server
Backup Server OBFS
Backward compatibility
Backward compatibility
Backward compatibility
Backward compatibility
Backward compatibility OBFS
Outgoing
VPN Client (PC)
≤
Version 2.0.128
TCP / 443 (OpenVPN)
vpn2.aw
-cp.de
62.138.201.23
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
VPN China (PC & Router)
TCP / 443 (OpenVPN)
No DNS
101.132.149.212
China Server
Outgoing
VPN Server for future use
vpn3
-we.aw-cp.de
vpn4
-we.aw-cp.de
vpn3
-ne.aw-cp.de
vpn4
-ne.aw-cp.de
51.136.30.13
51.144.182.20
40.115.121.76
40.114.121.69
Reserved for future use
Outgoing
Not in use any more
TCP / 443 / 80
adst02.synserver.de
217.119.57.16
Server not in use
Outgoing
TCP / 443
No DNS
217.6.47.174
Former static VPN server
Outgoing
Other port and protocols needed 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 is the full Server
-List for u-link. Most of these servers are only used, when the connection to the main servers is prohibited. Please don't use the Backward compatibility servers if not necessary!
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.