User Documentation

Page 60
Explanation of u-link configuration
parameters
4.6 Configuration of the Router
Chapter 4 – Setup of a remote access scenario (Configuration Router)
Initiation by digital input (Checkbox)
If enabled the 24VDC digital input can be
used for activating a VPN tunnel to the u-link
VPN server.
Log Level (Dropdown box)
Selection of logging level (Messages
shown in the Event Log).
Inactivity timeout (Dropdown box)
The Router automatically will shutdown
a VPN connection after the selected
time if no traffic was recognized during this time.
HTTP Proxy (Checkbox)
Enable if the Internet access is passing a Proxy
server (Configure Proxy settings in menu
Configuration → Network → HTTP Proxy)
VPN LED / Output controller
If set to “u-link” an active VPN
tunnel will be signalized at front
LED “VPN” and the digital output
“VPN-active”.
Copyright © 2020 Weidmüller Interface GmbH & Co. / All rights reserved. Reproduction without permission is prohibited.V1.5.1 / Oct, 2020
“Initiation from u-link web portal” (Dropdown box)
Controls if the u-link VPN tunnel can be activated/deactivated remotely from the u-link Web portal via the WWH
(world wide heartbeat) function.
Selections:
Never allowed: Remote activation/deactivation of the VPN tunnel from u-link Web portal never is allowed.
Always allowed: Remote activation/deactivation of the VPN tunnel from u-link Web portal always is allowed.
Allowed if digital input (VPN-Initiate) is active: Means that remote activation/deactivation from u-link Web portal only is allowed when the digital input “VPN-Initiate”
is set to 24VDC.
Explanation: If a machine operator at Router location has activated the 24VDC digital input “VPN-Initiate” (eg. by key switch) then the VPN tunnel will be started
providing the remote access. But if the service guy will not immediately start the service (means no traffic on the VPN tunnel) then by default the Router
automatically de-activates the VPN tunnel after 1 hour of no traffic. But to due to the fact that the key switch still is on (means the access permission is still granted),
the remote Service user may re-activate the VPN tunnel remotely. If the key switch again is set to off (24VDC removed from digital input) then the VPN tunnel will be
de-activated immediately and the remote Service user no longer is allowed to activate the VPN tunnel remotely.