Contemporary Control Systems Compact Managed Switches Software Manual for Console Access - Manual (Page 48)

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4.3.11 Configure Port Security
Figure 39 illustrates an example of the Configure Port Security screen for an 8-port
switch. Each port has its security disabled by default. If security is enabled for a port,
no further MAC addresses are learned for that port and future transmissions through the
port will only succeed if the source is listed in the address look-up table. Because static
MAC addresses are not learned (aged out of the table), they are not affected by the
applied security. Screens for 16- and 24-port switches would display the applicable
number of ports for configuration.
Figure 39 — Configure Port Security
This is a useful feature when connecting to an unknown network — such as connecting
the office network to the control network — and can be used to limit the office devices
that can access the control network.
A convenient link to
Add Static MAC Addresses is provided at the bottom of the
screen. When activated, this link displays the same screen as shown in Figure 18.