ZyXEL Communications MGS-3712F User Manual page 113

Figure 59 Port Based VLAN Setup (Port Isolation)
The following table describes the labels in this screen.
Table 20 Port Based VLAN Setup
label
Setting
Wizard
Incoming
MGS-3712/MGS-3712F User's Guide
Description
Choose All connected or Port isolation.
All connected means all ports can communicate with each other, that is,
there are no virtual LANs. All incoming and outgoing ports are selected.
This option is the most flexible but also the least secure.
Port isolation means that each port can only communicate with the CPU
management port and cannot communicate with each other. All incoming
ports are selected while only the CPU outgoing port is selected. This option
is the most limiting but also the most secure.
After you make your selection, click Apply (top right of screen) to display
the screens as mentioned above. You can still customize these settings by
adding/deleting incoming or outgoing ports, but you must also click Apply
at the bottom of the screen.
These are the ingress ports; an ingress port is an incoming port, that is, a
port through which a data packet enters. If you wish to allow two
subscriber ports to talk to each other, you must define the ingress port for
both ports. The numbers in the top row denote the incoming port for the
corresponding port listed on the left (its outgoing port). CPU refers to the
Switch management port. By default it forms a VLAN with all Ethernet
ports. If it does not form a VLAN with a particular port then the Switch
cannot be managed from that port.
Chapter 9 VLAN
113