Barox L Series, Operating Instructions Manual, Page: 34 / 69

barox Kommunikation 34
The protection using MAC filtering provides a simple protection against an unwanted network
access. Nevertheless it does not e.g. protect against the
widely spread attack type „MAC-
Spoofing“.
5.1.4. Port Security with Limit Control Settings
The use of Limit Control is recommended where unmanaged switches with terminal devices
are connected to the barox switch. Basically this function prevents the blocking o f the network
communication of further unwanted IP/Ethernet terminals which are connected to free ports of
the unmanaged switches. For planning purposes the complete number of network devices
including the unmanaged switch, which are connected to the respe ctive port of the barox switch,
needs to be determined. E.g.: The total limit is 4 where one unmanaged switch with three further
network terminals is connected to port 2 of the barox switch. The configuration must be activated
first. Furthermore the respective port is activated, the limit is determined and the action selected,
which applies in case of an exceedance. The learning of the terminal devices is activated and
enabled using the
„Sticky”
function. During the configuration the devices must be physica lly
connected to the barox switch using the port to be configured. The following screenshot shows
a visual representation of the settings.