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C2.22
Set the modes for CUT and Alarm acknowledgement to Automatic
After finishing
configuration and applying (don’t forget) of the behaviour how to re-set the event, a test of the
configured CUT-Firewall-rule can be started.
C2.23 Connect a PC at WAN-Port of the Router.
C2.24 Connect a second PC at LAN-Port of the Router to check what happens when the CUT-event is
triggered.
C2.25 Send a Ping request from PC-WAN to PC-LAN.
As result the WAN port should be disabled immediately. In automatic mode you have to wait the delay time
until the WAN port is re-activating. In manual mode goto to Routers Web-Interface with PC-LAN, select menu
Cut & Alarm, change to tab “State” and click buttons “Reset cut signal” and/or “Reset alarm signal”.
Note: Please keep in mind that “pinging” the
IP address of Router
’s LAN-Port
from WAN-network
will
not
trigger the configured Firewall-rule. The Layer-3-Firewall is only working for data packets which have to be
transmitted
from Router’s inbound to outbound interfaces to an external device.
Method 3: Software-based WAN port
disconnection by feature “Client monitoring”
The Router has a builtin feature named “Client monitoring” which can be used to test if a connected device is
still alive. This will be done by periodically sending a block of 5 ping requests every 50 seconds. If a moni-
tored device is no longer answering then either an internal CUT (disconnect WAN port) or an Alarm (24 VDC
digital output) can be triggered.
As an example (as shown in the screenshot below) we create an entry to monitor a device with the IP ad-
dress 192.168.10.11.
C3.1
Goto menu Configuration
Services
Client monitoring
C3.2
Enter into the line of section “Add a new entry” the parameters to monitor a device
▪ IP address
Device which will be monitored
▪ Delay (ms)
The Router sends every 50 seconds a block of 5 ping requests to the monitored
device. If the average response time (based on 5 ping requests) is longer than
the configured Delay-time then this trigger condition will match.
▪ Packet loss(%)
If the lost share (no response) of 5 ping requests is greater than this
configured value then this trigger condition will match.
▪ Action
As an action “CUT”-WAN-Port or an “Alarm” can be defined. An action will be
triggered if one of the parameters
Delay (ms)
or
Packet loss(%)
exceeds the
configured values.
Note: If you select the
action “CUT” it makes only sense to monitor devices at LAN port due to the fact that
the WAN port will be disabled in case of a lost connection.
